8685641 has 4 divisors (see below), whose sum is σ = 9142800. Its totient is φ = 8228484.

The previous prime is 8685637. The next prime is 8685653. The reversal of 8685641 is 1465868.

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 a cyclic number.

It is not a de Polignac number, because 8685641 - 2² = 8685637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8685595 and 8685604.

It is not an unprimeable number, because it can be changed into a prime (8685601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 228551 + ... + 228588.

It is an arithmetic number, because the mean of its divisors is an integer number (2285700).

Almost surely, 2^8685641 is an apocalyptic number.

It is an amenable number.

8685641 is a deficient number, since it is larger than the sum of its proper divisors (457159).

8685641 is a wasteful number, since it uses less digits than its factorization.

8685641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457158.

The product of its digits is 46080, while the sum is 38.

The square root of 8685641 is about 2947.1411571216. The cubic root of 8685641 is about 205.5577987364.

The spelling of 8685641 in words is "eight million, six hundred eighty-five thousand, six hundred forty-one".