864461216 has 48 divisors (see below), whose sum is σ = 1720663560. Its totient is φ = 427499520.

The previous prime is 864461201. The next prime is 864461243. The reversal of 864461216 is 612164468.

It can be written as a sum of positive squares in 4 ways, for example, as 851472400 + 12988816 = 29180^2 + 3604^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 864461216.

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, 1518980 + ... + 1519548.

Almost surely, 2^864461216 is an apocalyptic number.

It is an amenable number.

864461216 is a deficient number, since it is larger than the sum of its proper divisors (856202344).

864461216 is a wasteful number, since it uses less digits than its factorization.

864461216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1017 (or 1009 counting only the distinct ones).

The product of its digits is 55296, while the sum is 38.

The square root of 864461216 is about 29401.7213101546. The cubic root of 864461216 is about 952.6100766734.

The spelling of 864461216 in words is "eight hundred sixty-four million, four hundred sixty-one thousand, two hundred sixteen".