860558816 has 72 divisors (see below), whose sum is σ = 1845285624. Its totient is φ = 394867200.

The previous prime is 860558813. The next prime is 860558851. The reversal of 860558816 is 618855068.

It is a super-2 number, since 2×860558816² = 1481122951590643712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (860558813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1227266 + ... + 1227966.

It is an arithmetic number, because the mean of its divisors is an integer number (25628967).

Almost surely, 2^860558816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 860558816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (922642812).

860558816 is an abundant number, since it is smaller than the sum of its proper divisors (984726808).

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

860558816 is a wasteful number, since it uses less digits than its factorization.

860558816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 943 counting only the distinct ones).

The product of its (nonzero) digits is 460800, while the sum is 47.

The square root of 860558816 is about 29335.2827837060. The cubic root of 860558816 is about 951.1744720715.

The spelling of 860558816 in words is "eight hundred sixty million, five hundred fifty-eight thousand, eight hundred sixteen".