99664012 has 24 divisors (see below), whose sum is σ = 200904704. Its totient is φ = 42375312.

The previous prime is 99664007. The next prime is 99664031. The reversal of 99664012 is 21046699.

It is a super-2 number, since 2×99664012² = 19865830575872288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10458 + ... + 17569.

Almost surely, 2^99664012 is an apocalyptic number.

It is an amenable number.

99664012 is an abundant number, since it is smaller than the sum of its proper divisors (101240692).

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

99664012 is a wasteful number, since it uses less digits than its factorization.

99664012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28165 (or 28163 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 99664012 is about 9983.1864652525. The cubic root of 99664012 is about 463.6384606898.

The spelling of 99664012 in words is "ninety-nine million, six hundred sixty-four thousand, twelve".