864626480 has 20 divisors (see below), whose sum is σ = 2010256752. Its totient is φ = 345850560.

The previous prime is 864626479. The next prime is 864626489. The reversal of 864626480 is 84626468.

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (864626489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5403836 + ... + 5403995.

Almost surely, 2^864626480 is an apocalyptic number.

864626480 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

864626480 is an abundant number, since it is smaller than the sum of its proper divisors (1145630272).

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

864626480 is a wasteful number, since it uses less digits than its factorization.

864626480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10807844 (or 10807838 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 44.

The square root of 864626480 is about 29404.5316235440. The cubic root of 864626480 is about 952.6707781128.

The spelling of 864626480 in words is "eight hundred sixty-four million, six hundred twenty-six thousand, four hundred eighty".