7883681 has 6 divisors (see below), whose sum is σ = 8536950. Its totient is φ = 7277088.

The previous prime is 7883677. The next prime is 7883683. The reversal of 7883681 is 1863887.

It can be written as a sum of positive squares in 3 ways, for example, as 43681 + 7840000 = 209^2 + 2800^2 .

It is not a de Polignac number, because 7883681 - 2² = 7883677 is a prime.

It is a super-2 number, since 2×7883681² = 124304852219522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7883683) 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 5 ways as a sum of consecutive naturals, for example, 23156 + ... + 23493.

It is an arithmetic number, because the mean of its divisors is an integer number (1422825).

Almost surely, 2^7883681 is an apocalyptic number.

It is an amenable number.

7883681 is a deficient number, since it is larger than the sum of its proper divisors (653269).

7883681 is a wasteful number, since it uses less digits than its factorization.

7883681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46675 (or 46662 counting only the distinct ones).

The product of its digits is 64512, while the sum is 41.

The square root of 7883681 is about 2807.7893439501. The cubic root of 7883681 is about 199.0259387247.

The spelling of 7883681 in words is "seven million, eight hundred eighty-three thousand, six hundred eighty-one".