86168505 has 16 divisors (see below), whose sum is σ = 138176064. Its totient is φ = 45854400.

The previous prime is 86168473. The next prime is 86168521. The reversal of 86168505 is 50586168.

It is not a de Polignac number, because 86168505 - 2⁵ = 86168473 is a prime.

It is a super-2 number, since 2×86168505² = 14850022507870050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 855 + ... + 13155.

It is an arithmetic number, because the mean of its divisors is an integer number (8636004).

Almost surely, 2^86168505 is an apocalyptic number.

It is an amenable number.

86168505 is a deficient number, since it is larger than the sum of its proper divisors (52007559).

86168505 is a wasteful number, since it uses less digits than its factorization.

86168505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12776.

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

The square root of 86168505 is about 9282.6992302886. The cubic root of 86168505 is about 441.6885957230.

The spelling of 86168505 in words is "eighty-six million, one hundred sixty-eight thousand, five hundred five".