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6861285381 = 32557989413
BaseRepresentation
bin1100110001111011…
…01110100000000101
3122201011201102002210
412120331232200011
5103022442113011
63052501054033
7332012651316
oct63075564005
918634642083
106861285381
112a01020295
1213b59b7319
138546589a2
1449136c60d
152a25686a6
hex198f6e805

6861285381 has 8 divisors (see below), whose sum is σ = 9148840480. Its totient is φ = 4573960272.

The previous prime is 6861285371. The next prime is 6861285427. The reversal of 6861285381 is 1835821686.

6861285381 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 6861285381 - 29 = 6861284869 is a prime.

It is a super-2 number, since 2×68612853812 = 94154474159048630322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6861285381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6861285311) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32031 + ... + 121443.

It is an arithmetic number, because the mean of its divisors is an integer number (1143605060).

Almost surely, 26861285381 is an apocalyptic number.

It is an amenable number.

6861285381 is a deficient number, since it is larger than the sum of its proper divisors (2287555099).

6861285381 is a wasteful number, since it uses less digits than its factorization.

6861285381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114995.

The product of its digits is 552960, while the sum is 48.

The square root of 6861285381 is about 82832.8762086649. The cubic root of 6861285381 is about 1900.2109997434.

The spelling of 6861285381 in words is "six billion, eight hundred sixty-one million, two hundred eighty-five thousand, three hundred eighty-one".

Divisors: 1 3 25579 76737 89413 268239 2287095127 6861285381