99696557 has 2 divisors, whose sum is σ = 99696558. Its totient is φ = 99696556.

The previous prime is 99696539. The next prime is 99696563. The reversal of 99696557 is 75569699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 93045316 + 6651241 = 9646^2 + 2579^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99696557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99696587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49848278 + 49848279.

It is an arithmetic number, because the mean of its divisors is an integer number (49848279).

Almost surely, 2^99696557 is an apocalyptic number.

It is an amenable number.

99696557 is a deficient number, since it is larger than the sum of its proper divisors (1).

99696557 is an equidigital number, since it uses as much as digits as its factorization.

99696557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4592700, while the sum is 56.

The square root of 99696557 is about 9984.8163227973. The cubic root of 99696557 is about 463.6889218050.

The spelling of 99696557 in words is "ninety-nine million, six hundred ninety-six thousand, five hundred fifty-seven".