86670438 has 16 divisors (see below), whose sum is σ = 182464320. Its totient is φ = 27369576.

The previous prime is 86670401. The next prime is 86670449. The reversal of 86670438 is 83407668.

It is a super-2 number, since 2×86670438² = 15023529646223688, which contains 22 as substring.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 86670438.

It is a congruent number.

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, 380020 + ... + 380247.

It is an arithmetic number, because the mean of its divisors is an integer number (11404020).

Almost surely, 2^86670438 is an apocalyptic number.

86670438 is an abundant number, since it is smaller than the sum of its proper divisors (95793882).

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

86670438 is a wasteful number, since it uses less digits than its factorization.

86670438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 760291.

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 86670438 is about 9309.6959134013. The cubic root of 86670438 is about 442.5445503998.

The spelling of 86670438 in words is "eighty-six million, six hundred seventy thousand, four hundred thirty-eight".