860660816 has 10 divisors (see below), whose sum is σ = 1667530362. Its totient is φ = 430330400.

The previous prime is 860660809. The next prime is 860660849. The reversal of 860660816 is 618066068.

It can be written as a sum of positive squares in only one way, i.e., 799758400 + 60902416 = 28280^2 + 7804^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26895635 + ... + 26895666.

Almost surely, 2^860660816 is an apocalyptic number.

It is an amenable number.

860660816 is a deficient number, since it is larger than the sum of its proper divisors (806869546).

860660816 is a wasteful number, since it uses less digits than its factorization.

860660816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53791309 (or 53791303 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 41.

The square root of 860660816 is about 29337.0212530175. The cubic root of 860660816 is about 951.2120507400.

The spelling of 860660816 in words is "eight hundred sixty million, six hundred sixty thousand, eight hundred sixteen".