868669864 has 32 divisors (see below), whose sum is σ = 1651104000. Its totient is φ = 428409792.

The previous prime is 868669847. The next prime is 868669883. The reversal of 868669864 is 468966868.

It is a super-3 number, since 3×868669864³ (a number of 28 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 219697 + ... + 223615.

It is an arithmetic number, because the mean of its divisors is an integer number (51597000).

Almost surely, 2^868669864 is an apocalyptic number.

It is an amenable number.

868669864 is a deficient number, since it is larger than the sum of its proper divisors (782434136).

868669864 is a wasteful number, since it uses less digits than its factorization.

868669864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4297 (or 4293 counting only the distinct ones).

The product of its digits is 23887872, while the sum is 61.

The square root of 868669864 is about 29473.2058656672. The cubic root of 868669864 is about 954.1535088397.

The spelling of 868669864 in words is "eight hundred sixty-eight million, six hundred sixty-nine thousand, eight hundred sixty-four".