99658613 has 2 divisors, whose sum is σ = 99658614. Its totient is φ = 99658612.

The previous prime is 99658589. The next prime is 99658621. The reversal of 99658613 is 31685699.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 86248369 + 13410244 = 9287^2 + 3662^2 .

It is a cyclic number.

It is not a de Polignac number, because 99658613 - 2¹⁴ = 99642229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99658813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49829306 + 49829307.

It is an arithmetic number, because the mean of its divisors is an integer number (49829307).

Almost surely, 2^99658613 is an apocalyptic number.

It is an amenable number.

99658613 is a deficient number, since it is larger than the sum of its proper divisors (1).

99658613 is an equidigital number, since it uses as much as digits as its factorization.

99658613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 349920, while the sum is 47.

The square root of 99658613 is about 9982.9160569445. The cubic root of 99658613 is about 463.6300884626.

The spelling of 99658613 in words is "ninety-nine million, six hundred fifty-eight thousand, six hundred thirteen".