864808680 has 32 divisors (see below), whose sum is σ = 2594426400. Its totient is φ = 230615616.

The previous prime is 864808673. The next prime is 864808687. The reversal of 864808680 is 86808468.

It is an interprime number because it is at equal distance from previous prime (864808673) and next prime (864808687).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (864808687) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3603250 + ... + 3603489.

It is an arithmetic number, because the mean of its divisors is an integer number (81075825).

Almost surely, 2^864808680 is an apocalyptic number.

It is an amenable number.

864808680 is an abundant number, since it is smaller than the sum of its proper divisors (1729617720).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

864808680 is a wasteful number, since it uses less digits than its factorization.

864808680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7206753 (or 7206749 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 48.

The square root of 864808680 is about 29407.6296222596. The cubic root of 864808680 is about 952.7376911783.

The spelling of 864808680 in words is "eight hundred sixty-four million, eight hundred eight thousand, six hundred eighty".