99660001 has 16 divisors (see below), whose sum is σ = 122135040. Its totient is φ = 79372800.

The previous prime is 99659983. The next prime is 99660013. The reversal of 99660001 is 10006699.

It is a cyclic number.

It is not a de Polignac number, because 99660001 - 2⁵ = 99659969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (99660061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4101 + ... + 14701.

It is an arithmetic number, because the mean of its divisors is an integer number (7633440).

Almost surely, 2^99660001 is an apocalyptic number.

It is an amenable number.

99660001 is a deficient number, since it is larger than the sum of its proper divisors (22475039).

99660001 is a wasteful number, since it uses less digits than its factorization.

99660001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10704.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 99660001 is about 9982.9855754679. The cubic root of 99660001 is about 463.6322408625.

The spelling of 99660001 in words is "ninety-nine million, six hundred sixty thousand, one".