99640324 has 81 divisors (see below), whose sum is σ = 219102471. Its totient is φ = 39528720.

The previous prime is 99640309. The next prime is 99640327. The reversal of 99640324 is 42304699.

The square root of 99640324 is 9982.

It is a perfect power (a square), and thus also a powerful number.

It is not an unprimeable number, because it can be changed into a prime (99640327) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 3214189 + ... + 3214219.

Almost surely, 2^99640324 is an apocalyptic number.

99640324 is the 9982-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99640324

99640324 is an abundant number, since it is smaller than the sum of its proper divisors (119462147).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

99640324 is a wasteful number, since it uses less digits than its factorization.

99640324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126 (or 63 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The cubic root of 99640324 is about 463.6017254702.

Multiplying 99640324 by its product of nonzero digits (46656), we get a square (4648818956544 = 2156112²).

The spelling of 99640324 in words is "ninety-nine million, six hundred forty thousand, three hundred twenty-four".