86145878 has 32 divisors (see below), whose sum is σ = 160333824. Its totient is φ = 33802272.

The previous prime is 86145827. The next prime is 86145881. The reversal of 86145878 is 87854168.

It is a happy number.

It is a super-2 number, since 2×86145878² = 14842224592781768, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21251 + ... + 24977.

It is an arithmetic number, because the mean of its divisors is an integer number (5010432).

Almost surely, 2^86145878 is an apocalyptic number.

86145878 is a deficient number, since it is larger than the sum of its proper divisors (74187946).

86145878 is a wasteful number, since it uses less digits than its factorization.

86145878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876.

The product of its digits is 430080, while the sum is 47.

The square root of 86145878 is about 9281.4803776122. The cubic root of 86145878 is about 441.6499313148.

The spelling of 86145878 in words is "eighty-six million, one hundred forty-five thousand, eight hundred seventy-eight".