860807986 has 16 divisors (see below), whose sum is σ = 1339205400. Its totient is φ = 414483328.

The previous prime is 860807947. The next prime is 860807999. The reversal of 860807986 is 689708068.

It can be written as a sum of positive squares in 4 ways, for example, as 729270025 + 131537961 = 27005^2 + 11469^2 .

It is a super-2 number, since 2×860807986² = 1481980777522752392, which contains 22 as substring.

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, 3486 + ... + 41638.

Almost surely, 2^860807986 is an apocalyptic number.

860807986 is a deficient number, since it is larger than the sum of its proper divisors (478397414).

860807986 is a wasteful number, since it uses less digits than its factorization.

860807986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38573.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 860807986 is about 29339.5294099957. The cubic root of 860807986 is about 951.2662656318.

The spelling of 860807986 in words is "eight hundred sixty million, eight hundred seven thousand, nine hundred eighty-six".