864359997 has 16 divisors (see below), whose sum is σ = 1187092032. Its totient is φ = 559025280.

The previous prime is 864359981. The next prime is 864360001. The reversal of 864359997 is 799953468.

864359997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 864359997 - 2⁴ = 864359981 is a prime.

It is a super-4 number, since 4×864359997⁴ (a number of 37 digits) contains 4444 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 864359997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (864359927) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27297 + ... + 49737.

It is an arithmetic number, because the mean of its divisors is an integer number (74193252).

Almost surely, 2^864359997 is an apocalyptic number.

It is an amenable number.

864359997 is a deficient number, since it is larger than the sum of its proper divisors (322732035).

864359997 is a wasteful number, since it uses less digits than its factorization.

864359997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22828.

The product of its digits is 14696640, while the sum is 60.

The square root of 864359997 is about 29399.9999489796. Note that the first 4 decimals coincide. The cubic root of 864359997 is about 952.5728951314.

The spelling of 864359997 in words is "eight hundred sixty-four million, three hundred fifty-nine thousand, nine hundred ninety-seven".