99634664 has 8 divisors (see below), whose sum is σ = 186815010. Its totient is φ = 49817328.

The previous prime is 99634663. The next prime is 99634669. The reversal of 99634664 is 46643699.

It can be written as a sum of positive squares in only one way, i.e., 91049764 + 8584900 = 9542^2 + 2930^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (99634663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6227159 + ... + 6227174.

Almost surely, 2^99634664 is an apocalyptic number.

It is an amenable number.

99634664 is a deficient number, since it is larger than the sum of its proper divisors (87180346).

99634664 is a wasteful number, since it uses less digits than its factorization.

99634664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12454339 (or 12454335 counting only the distinct ones).

The product of its digits is 839808, while the sum is 47.

The square root of 99634664 is about 9981.7164856552. The cubic root of 99634664 is about 463.5929471117.

The spelling of 99634664 in words is "ninety-nine million, six hundred thirty-four thousand, six hundred sixty-four".