99685577 has 2 divisors, whose sum is σ = 99685578. Its totient is φ = 99685576.

The previous prime is 99685561. The next prime is 99685583. The reversal of 99685577 is 77558699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 80928016 + 18757561 = 8996^2 + 4331^2 .

It is a cyclic number.

It is not a de Polignac number, because 99685577 - 2⁴ = 99685561 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (99685877) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49842788 + 49842789.

It is an arithmetic number, because the mean of its divisors is an integer number (49842789).

Almost surely, 2^99685577 is an apocalyptic number.

It is an amenable number.

99685577 is a deficient number, since it is larger than the sum of its proper divisors (1).

99685577 is an equidigital number, since it uses as much as digits as its factorization.

99685577 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4762800, while the sum is 56.

The square root of 99685577 is about 9984.2664728061. The cubic root of 99685577 is about 463.6718985114.

The spelling of 99685577 in words is "ninety-nine million, six hundred eighty-five thousand, five hundred seventy-seven".