86853878 has 16 divisors (see below), whose sum is σ = 134711424. Its totient is φ = 41954880.

The previous prime is 86853859. The next prime is 86853881. The reversal of 86853878 is 87835868.

It is a super-2 number, since 2×86853878² = 15087192247277768, which contains 22 as substring.

It is a Curzon number.

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, 67376 + ... + 68652.

It is an arithmetic number, because the mean of its divisors is an integer number (8419464).

Almost surely, 2^86853878 is an apocalyptic number.

86853878 is a deficient number, since it is larger than the sum of its proper divisors (47857546).

86853878 is a wasteful number, since it uses less digits than its factorization.

86853878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2407.

The product of its digits is 2580480, while the sum is 53.

The square root of 86853878 is about 9319.5427999446. The cubic root of 86853878 is about 442.8565490007.

The spelling of 86853878 in words is "eighty-six million, eight hundred fifty-three thousand, eight hundred seventy-eight".