99708638 has 16 divisors (see below), whose sum is σ = 162225504. Its totient is φ = 45776640.

The previous prime is 99708619. The next prime is 99708671. The reversal of 99708638 is 83680799.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34370 + ... + 37157.

It is an arithmetic number, because the mean of its divisors is an integer number (10139094).

Almost surely, 2^99708638 is an apocalyptic number.

99708638 is a deficient number, since it is larger than the sum of its proper divisors (62516866).

99708638 is a wasteful number, since it uses less digits than its factorization.

99708638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71587.

The product of its (nonzero) digits is 653184, while the sum is 50.

The square root of 99708638 is about 9985.4212730360. The cubic root of 99708638 is about 463.7076506350.

The spelling of 99708638 in words is "ninety-nine million, seven hundred eight thousand, six hundred thirty-eight".