99955664 has 10 divisors (see below), whose sum is σ = 193664130. Its totient is φ = 49977824.

The previous prime is 99955651. The next prime is 99955673. The reversal of 99955664 is 46655999.

It can be written as a sum of positive squares in only one way, i.e., 99840064 + 115600 = 9992^2 + 340^2 .

It is a super-2 number, since 2×99955664² = 19982269531361792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3123599 + ... + 3123630.

It is an arithmetic number, because the mean of its divisors is an integer number (19366413).

Almost surely, 2^99955664 is an apocalyptic number.

It is an amenable number.

99955664 is a deficient number, since it is larger than the sum of its proper divisors (93708466).

99955664 is a wasteful number, since it uses less digits than its factorization.

99955664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6247237 (or 6247231 counting only the distinct ones).

The product of its digits is 2624400, while the sum is 53.

The square root of 99955664 is about 9997.7829542354. The cubic root of 99955664 is about 464.0902767270.

The spelling of 99955664 in words is "ninety-nine million, nine hundred fifty-five thousand, six hundred sixty-four".