99665272 has 64 divisors (see below), whose sum is σ = 221944320. Its totient is φ = 41067648.

The previous prime is 99665263. The next prime is 99665299. The reversal of 99665272 is 27256699.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213183 + ... + 213649.

It is an arithmetic number, because the mean of its divisors is an integer number (3467880).

Almost surely, 2^99665272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99665272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110972160).

99665272 is an abundant number, since it is smaller than the sum of its proper divisors (122279048).

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

99665272 is a wasteful number, since it uses less digits than its factorization.

99665272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 620 (or 616 counting only the distinct ones).

The product of its digits is 408240, while the sum is 46.

The square root of 99665272 is about 9983.2495711567. The cubic root of 99665272 is about 463.6404145278.

The spelling of 99665272 in words is "ninety-nine million, six hundred sixty-five thousand, two hundred seventy-two".