99802665 has 32 divisors (see below), whose sum is σ = 187868160. Its totient is φ = 50095872.

The previous prime is 99802639. The next prime is 99802669. The reversal of 99802665 is 56620899.

It is not a de Polignac number, because 99802665 - 2⁷ = 99802537 is a prime.

It is a super-2 number, since 2×99802665² = 19921143882204450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 99802665.

It is not an unprimeable number, because it can be changed into a prime (99802669) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19449 + ... + 24038.

It is an arithmetic number, because the mean of its divisors is an integer number (5870880).

Almost surely, 2^99802665 is an apocalyptic number.

It is an amenable number.

99802665 is a deficient number, since it is larger than the sum of its proper divisors (88065495).

99802665 is a wasteful number, since it uses less digits than its factorization.

99802665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43518 (or 43512 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 99802665 is about 9990.1283775535. The cubic root of 99802665 is about 463.8533663316.

The spelling of 99802665 in words is "ninety-nine million, eight hundred two thousand, six hundred sixty-five".