86065815 has 64 divisors (see below), whose sum is σ = 161989632. Its totient is φ = 38553600.

The previous prime is 86065807. The next prime is 86065831. The reversal of 86065815 is 51856068.

It is not a de Polignac number, because 86065815 - 2³ = 86065807 is a prime.

It is a super-2 number, since 2×86065815² = 14814649023228450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 170854 + ... + 171356.

It is an arithmetic number, because the mean of its divisors is an integer number (2531088).

Almost surely, 2^86065815 is an apocalyptic number.

86065815 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

86065815 is a deficient number, since it is larger than the sum of its proper divisors (75923817).

86065815 is a wasteful number, since it uses less digits than its factorization.

86065815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600.

The product of its (nonzero) digits is 57600, while the sum is 39.

The square root of 86065815 is about 9277.1663238297. The cubic root of 86065815 is about 441.5130674304.

The spelling of 86065815 in words is "eighty-six million, sixty-five thousand, eight hundred fifteen".