99708517 has 2 divisors, whose sum is σ = 99708518. Its totient is φ = 99708516.

The previous prime is 99708461. The next prime is 99708533. The reversal of 99708517 is 71580799.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 71893441 + 27815076 = 8479^2 + 5274^2 .

It is a cyclic number.

It is not a de Polignac number, because 99708517 - 2¹¹ = 99706469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99703517) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49854258 + 49854259.

It is an arithmetic number, because the mean of its divisors is an integer number (49854259).

Almost surely, 2^99708517 is an apocalyptic number.

It is an amenable number.

99708517 is a deficient number, since it is larger than the sum of its proper divisors (1).

99708517 is an equidigital number, since it uses as much as digits as its factorization.

99708517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 158760, while the sum is 46.

The square root of 99708517 is about 9985.4152142012. The cubic root of 99708517 is about 463.7074630596.

The spelling of 99708517 in words is "ninety-nine million, seven hundred eight thousand, five hundred seventeen".