99613957 has 2 divisors, whose sum is σ = 99613958. Its totient is φ = 99613956.

The previous prime is 99613951. The next prime is 99613963. The reversal of 99613957 is 75931699.

It is a balanced prime because it is at equal distance from previous prime (99613951) and next prime (99613963).

It can be written as a sum of positive squares in only one way, i.e., 90041121 + 9572836 = 9489^2 + 3094^2 .

It is a cyclic number.

It is not a de Polignac number, because 99613957 - 2¹¹ = 99611909 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99613957.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99613951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49806978 + 49806979.

It is an arithmetic number, because the mean of its divisors is an integer number (49806979).

Almost surely, 2^99613957 is an apocalyptic number.

It is an amenable number.

99613957 is a deficient number, since it is larger than the sum of its proper divisors (1).

99613957 is an equidigital number, since it uses as much as digits as its factorization.

99613957 is an evil number, because the sum of its binary digits is even.

The product of its digits is 459270, while the sum is 49.

The square root of 99613957 is about 9980.6791853060. The cubic root of 99613957 is about 463.5608288245.

The spelling of 99613957 in words is "ninety-nine million, six hundred thirteen thousand, nine hundred fifty-seven".