99664164 has 18 divisors (see below), whose sum is σ = 251928950. Its totient is φ = 33221376.

The previous prime is 99664091. The next prime is 99664171. The reversal of 99664164 is 46146699.

It can be written as a sum of positive squares in only one way, i.e., 50552100 + 49112064 = 7110^2 + 7008^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

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 5 ways as a sum of consecutive naturals, for example, 1384189 + ... + 1384260.

Almost surely, 2^99664164 is an apocalyptic number.

It is an amenable number.

99664164 is an abundant number, since it is smaller than the sum of its proper divisors (152264786).

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

99664164 is a wasteful number, since it uses less digits than its factorization.

99664164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2768459 (or 2768454 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The square root of 99664164 is about 9983.1940780494. The cubic root of 99664164 is about 463.6386963917.

The spelling of 99664164 in words is "ninety-nine million, six hundred sixty-four thousand, one hundred sixty-four".