99656065 has 4 divisors (see below), whose sum is σ = 119587284. Its totient is φ = 79724848.

The previous prime is 99656047. The next prime is 99656071. The reversal of 99656065 is 56065699.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16353936 + 83302129 = 4044^2 + 9127^2 .

It is a cyclic number.

It is not a de Polignac number, because 99656065 - 2²¹ = 97558913 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9965602 + ... + 9965611.

It is an arithmetic number, because the mean of its divisors is an integer number (29896821).

Almost surely, 2^99656065 is an apocalyptic number.

It is an amenable number.

99656065 is a deficient number, since it is larger than the sum of its proper divisors (19931219).

99656065 is a wasteful number, since it uses less digits than its factorization.

99656065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19931218.

The product of its (nonzero) digits is 437400, while the sum is 46.

The square root of 99656065 is about 9982.7884381069. The cubic root of 99656065 is about 463.6261371750.

The spelling of 99656065 in words is "ninety-nine million, six hundred fifty-six thousand, sixty-five".