99565000 has 40 divisors (see below), whose sum is σ = 233292510. Its totient is φ = 39824000.

The previous prime is 99564979. The next prime is 99565003. The reversal of 99565000 is 56599.

It can be written as a sum of positive squares in 5 ways, for example, as 4268356 + 95296644 = 2066^2 + 9762^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (99565003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 4957 + ... + 14956.

Almost surely, 2^99565000 is an apocalyptic number.

It is an amenable number.

99565000 is an abundant number, since it is smaller than the sum of its proper divisors (133727510).

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

99565000 is a wasteful number, since it uses less digits than its factorization.

99565000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19939 (or 19920 counting only the distinct ones).

The product of its (nonzero) digits is 12150, while the sum is 34.

The square root of 99565000 is about 9978.2262952892. The cubic root of 99565000 is about 463.4848747211.

The spelling of 99565000 in words is "ninety-nine million, five hundred sixty-five thousand".