99630556 has 12 divisors (see below), whose sum is σ = 174811392. Its totient is φ = 49684448.

The previous prime is 99630551. The next prime is 99630569. The reversal of 99630556 is 65503699.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99630551) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30985 + ... + 34048.

It is an arithmetic number, because the mean of its divisors is an integer number (14567616).

Almost surely, 2^99630556 is an apocalyptic number.

It is an amenable number.

99630556 is a deficient number, since it is larger than the sum of its proper divisors (75180836).

99630556 is a wasteful number, since it uses less digits than its factorization.

99630556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65420 (or 65418 counting only the distinct ones).

The product of its (nonzero) digits is 218700, while the sum is 43.

The square root of 99630556 is about 9981.5107073028. The cubic root of 99630556 is about 463.5865756144.

The spelling of 99630556 in words is "ninety-nine million, six hundred thirty thousand, five hundred fifty-six".