86166511 has 4 divisors (see below), whose sum is σ = 89137800. Its totient is φ = 83195224.

The previous prime is 86166473. The next prime is 86166547. The reversal of 86166511 is 11566168.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 86166511 - 2⁷ = 86166383 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86166911) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1485601 + ... + 1485658.

It is an arithmetic number, because the mean of its divisors is an integer number (22284450).

Almost surely, 2^86166511 is an apocalyptic number.

86166511 is a deficient number, since it is larger than the sum of its proper divisors (2971289).

86166511 is a wasteful number, since it uses less digits than its factorization.

86166511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2971288.

The product of its digits is 8640, while the sum is 34.

The square root of 86166511 is about 9282.5918255625. The cubic root of 86166511 is about 441.6851887015.

The spelling of 86166511 in words is "eighty-six million, one hundred sixty-six thousand, five hundred eleven".