86921177 has 16 divisors (see below), whose sum is σ = 103566720. Its totient is φ = 71394048.

The previous prime is 86921167. The next prime is 86921183. The reversal of 86921177 is 77112968.

It is a cyclic number.

It is not a de Polignac number, because 86921177 - 2¹⁰ = 86920153 is a prime.

It is a super-2 number, since 2×86921177² = 15110582022130658, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (86921167) 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, 14849 + ... + 19857.

It is an arithmetic number, because the mean of its divisors is an integer number (6472920).

Almost surely, 2^86921177 is an apocalyptic number.

It is an amenable number.

86921177 is a deficient number, since it is larger than the sum of its proper divisors (16645543).

86921177 is a wasteful number, since it uses less digits than its factorization.

86921177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5120.

The product of its digits is 42336, while the sum is 41.

The square root of 86921177 is about 9323.1527392830. The cubic root of 86921177 is about 442.9709023992.

The spelling of 86921177 in words is "eighty-six million, nine hundred twenty-one thousand, one hundred seventy-seven".