99966177 has 16 divisors (see below), whose sum is σ = 148504000. Its totient is φ = 66461472.

The previous prime is 99966169. The next prime is 99966187. The reversal of 99966177 is 77166999.

It is not a de Polignac number, because 99966177 - 2³ = 99966169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99966157) 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, 5349 + ... + 15117.

It is an arithmetic number, because the mean of its divisors is an integer number (9281500).

Almost surely, 2^99966177 is an apocalyptic number.

It is an amenable number.

99966177 is a deficient number, since it is larger than the sum of its proper divisors (48537823).

99966177 is a wasteful number, since it uses less digits than its factorization.

99966177 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10157 (or 10151 counting only the distinct ones).

The product of its digits is 1285956, while the sum is 54.

The square root of 99966177 is about 9998.3087069764. The cubic root of 99966177 is about 464.1065466405.

It can be divided in two parts, 999 and 66177, that added together give a palindrome (67176).

The spelling of 99966177 in words is "ninety-nine million, nine hundred sixty-six thousand, one hundred seventy-seven".