86911605 has 48 divisors (see below), whose sum is σ = 173010240. Its totient is φ = 39916800.

The previous prime is 86911603. The next prime is 86911607. The reversal of 86911605 is 50611968.

It is an interprime number because it is at equal distance from previous prime (86911603) and next prime (86911607).

It is not a de Polignac number, because 86911605 - 2¹ = 86911603 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 86911605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86911603) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4785 + ... + 14025.

It is an arithmetic number, because the mean of its divisors is an integer number (3604380).

Almost surely, 2^86911605 is an apocalyptic number.

It is an amenable number.

86911605 is a deficient number, since it is larger than the sum of its proper divisors (86098635).

86911605 is a wasteful number, since it uses less digits than its factorization.

86911605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9282 (or 9279 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 36.

The square root of 86911605 is about 9322.6393794891. The cubic root of 86911605 is about 442.9546414093.

It can be divided in two parts, 8691 and 1605, that added together give a triangular number (10296 = T₁₄₃).

The spelling of 86911605 in words is "eighty-six million, nine hundred eleven thousand, six hundred five".