86312642 has 16 divisors (see below), whose sum is σ = 144237240. Its totient is φ = 38462592.

The previous prime is 86312627. The next prime is 86312663. The reversal of 86312642 is 24621368.

It can be written as a sum of positive squares in 4 ways, for example, as 71250481 + 15062161 = 8441^2 + 3881^2 .

It is a junction number, because it is equal to n+sod(n) for n = 86312599 and 86312608.

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, 56483 + ... + 57990.

Almost surely, 2^86312642 is an apocalyptic number.

86312642 is a deficient number, since it is larger than the sum of its proper divisors (57924598).

86312642 is a wasteful number, since it uses less digits than its factorization.

86312642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 114517.

The product of its digits is 13824, while the sum is 32.

The square root of 86312642 is about 9290.4597302825. The cubic root of 86312642 is about 441.9347343967.

The spelling of 86312642 in words is "eighty-six million, three hundred twelve thousand, six hundred forty-two".