86470864 has 20 divisors (see below), whose sum is σ = 167684580. Its totient is φ = 43197440.

The previous prime is 86470861. The next prime is 86470897. The reversal of 86470864 is 46807468.

It can be written as a sum of positive squares in 2 ways, for example, as 44997264 + 41473600 = 6708^2 + 6440^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 86470864.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86470861) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28794 + ... + 31654.

It is an arithmetic number, because the mean of its divisors is an integer number (8384229).

Almost surely, 2^86470864 is an apocalyptic number.

It is an amenable number.

86470864 is a deficient number, since it is larger than the sum of its proper divisors (81213716).

86470864 is a wasteful number, since it uses less digits than its factorization.

86470864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4758 (or 4752 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 43.

The square root of 86470864 is about 9298.9711258827. The cubic root of 86470864 is about 442.2046103307.

The spelling of 86470864 in words is "eighty-six million, four hundred seventy thousand, eight hundred sixty-four".