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68982893 = 79854699
BaseRepresentation
bin1000001110010…
…01100001101101
311210210200201222
410013021201231
5120124423033
610502313125
71465226210
oct407114155
9153720658
1068982893
1135a36961
121b1287a5
13113a38a5
149239777
1560c9598
hex41c986d

68982893 has 4 divisors (see below), whose sum is σ = 78837600. Its totient is φ = 59128188.

The previous prime is 68982847. The next prime is 68982913. The reversal of 68982893 is 39828986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 68982893 - 26 = 68982829 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68981893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4927343 + ... + 4927356.

It is an arithmetic number, because the mean of its divisors is an integer number (19709400).

Almost surely, 268982893 is an apocalyptic number.

It is an amenable number.

68982893 is a deficient number, since it is larger than the sum of its proper divisors (9854707).

68982893 is an equidigital number, since it uses as much as digits as its factorization.

68982893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9854706.

The product of its digits is 1492992, while the sum is 53.

The square root of 68982893 is about 8305.5940786918. The cubic root of 68982893 is about 410.1226937974.

The spelling of 68982893 in words is "sixty-eight million, nine hundred eighty-two thousand, eight hundred ninety-three".

Divisors: 1 7 9854699 68982893