864850356 has 18 divisors (see below), whose sum is σ = 2186149602. Its totient is φ = 288283440.

The previous prime is 864850339. The next prime is 864850381. The reversal of 864850356 is 653058468.

It can be written as a sum of positive squares in only one way, i.e., 825987600 + 38862756 = 28740^2 + 6234^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×864850356² = 1495932276546653472, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12011775 + ... + 12011846.

Almost surely, 2^864850356 is an apocalyptic number.

It is an amenable number.

864850356 is an abundant number, since it is smaller than the sum of its proper divisors (1321299246).

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

864850356 is a wasteful number, since it uses less digits than its factorization.

864850356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24023631 (or 24023626 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 864850356 is about 29408.3382053458. The cubic root of 864850356 is about 952.7529953949.

The spelling of 864850356 in words is "eight hundred sixty-four million, eight hundred fifty thousand, three hundred fifty-six".