99765505 has 32 divisors (see below), whose sum is σ = 144023040. Its totient is φ = 64903680.

The previous prime is 99765499. The next prime is 99765509. The reversal of 99765505 is 50556799.

It is not a de Polignac number, because 99765505 - 2⁵ = 99765473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99765509) 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, 52156 + ... + 54034.

It is an arithmetic number, because the mean of its divisors is an integer number (4500720).

Almost surely, 2^99765505 is an apocalyptic number.

It is an amenable number.

99765505 is a deficient number, since it is larger than the sum of its proper divisors (44257535).

99765505 is a wasteful number, since it uses less digits than its factorization.

99765505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1969.

The product of its (nonzero) digits is 425250, while the sum is 46.

The square root of 99765505 is about 9988.2683684410. The cubic root of 99765505 is about 463.7957896098.

The spelling of 99765505 in words is "ninety-nine million, seven hundred sixty-five thousand, five hundred five".