99081657 has 8 divisors (see below), whose sum is σ = 146787680. Its totient is φ = 66054420.

The previous prime is 99081643. The next prime is 99081667. The reversal of 99081657 is 75618099.

It is not a de Polignac number, because 99081657 - 2⁷ = 99081529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99081617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1834819 + ... + 1834872.

It is an arithmetic number, because the mean of its divisors is an integer number (18348460).

Almost surely, 2^99081657 is an apocalyptic number.

It is an amenable number.

99081657 is a deficient number, since it is larger than the sum of its proper divisors (47706023).

99081657 is a wasteful number, since it uses less digits than its factorization.

99081657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3669700 (or 3669694 counting only the distinct ones).

The product of its (nonzero) digits is 136080, while the sum is 45.

The square root of 99081657 is about 9953.9769439154. The cubic root of 99081657 is about 462.7336547161.

The spelling of 99081657 in words is "ninety-nine million, eighty-one thousand, six hundred fifty-seven".