86125878 has 24 divisors (see below), whose sum is σ = 186781608. Its totient is φ = 28681632.

The previous prime is 86125849. The next prime is 86125883. The reversal of 86125878 is 87852168.

86125878 is a `hidden beast` number, since 8 + 61 + 2 + 587 + 8 = 666.

It is a super-2 number, since 2×86125878² = 14835333722541768, 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 11 ways as a sum of consecutive naturals, for example, 29626 + ... + 32402.

It is an arithmetic number, because the mean of its divisors is an integer number (7782567).

Almost surely, 2^86125878 is an apocalyptic number.

86125878 is an abundant number, since it is smaller than the sum of its proper divisors (100655730).

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

86125878 is a wasteful number, since it uses less digits than its factorization.

86125878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4508 (or 4505 counting only the distinct ones).

The product of its digits is 215040, while the sum is 45.

The square root of 86125878 is about 9280.4029007366. The cubic root of 86125878 is about 441.6157502160.

The spelling of 86125878 in words is "eighty-six million, one hundred twenty-five thousand, eight hundred seventy-eight".