86805867 has 16 divisors (see below), whose sum is σ = 118063872. Its totient is φ = 56716320.

The previous prime is 86805857. The next prime is 86805869. The reversal of 86805867 is 76850868.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-86805867 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86805869) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 62818 + ... + 64184.

It is an arithmetic number, because the mean of its divisors is an integer number (7378992).

Almost surely, 2^86805867 is an apocalyptic number.

86805867 is a deficient number, since it is larger than the sum of its proper divisors (31258005).

86805867 is a wasteful number, since it uses less digits than its factorization.

86805867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1778.

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 86805867 is about 9316.9666200969. The cubic root of 86805867 is about 442.7749333600.

The spelling of 86805867 in words is "eighty-six million, eight hundred five thousand, eight hundred sixty-seven".