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7868101 = 23413361
BaseRepresentation
bin11110000000111011000101
3112210202000011
4132000323011
54003234401
6440350221
7123610033
oct36007305
915722004
107868101
11449446a
122775371
1318263a7
14108b553
15a56451
hex780ec5

7868101 has 4 divisors (see below), whose sum is σ = 7873804. Its totient is φ = 7862400.

The previous prime is 7868099. The next prime is 7868111. The reversal of 7868101 is 1018687.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1018687 = 1975171.

It can be written as a sum of positive squares in 2 ways, for example, as 5527201 + 2340900 = 2351^2 + 1530^2 .

It is a cyclic number.

It is not a de Polignac number, because 7868101 - 21 = 7868099 is a prime.

It is a Duffinian number.

7868101 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7868111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 661 + ... + 4021.

It is an arithmetic number, because the mean of its divisors is an integer number (1968451).

Almost surely, 27868101 is an apocalyptic number.

It is an amenable number.

7868101 is a deficient number, since it is larger than the sum of its proper divisors (5703).

7868101 is a wasteful number, since it uses less digits than its factorization.

7868101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5702.

The product of its (nonzero) digits is 2688, while the sum is 31.

The square root of 7868101 is about 2805.0135472044. The cubic root of 7868101 is about 198.8947449747.

The spelling of 7868101 in words is "seven million, eight hundred sixty-eight thousand, one hundred one".

Divisors: 1 2341 3361 7868101