66913113 has 16 divisors (see below), whose sum is σ = 90285120. Its totient is φ = 44078784.

The previous prime is 66913111. The next prime is 66913127. The reversal of 66913113 is 31131966.

It is not a de Polignac number, because 66913113 - 2¹ = 66913111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66913111) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118570 + ... + 119132.

It is an arithmetic number, because the mean of its divisors is an integer number (5642820).

Almost surely, 2^66913113 is an apocalyptic number.

It is an amenable number.

66913113 is a deficient number, since it is larger than the sum of its proper divisors (23372007).

66913113 is a wasteful number, since it uses less digits than its factorization.

66913113 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 968.

The product of its digits is 2916, while the sum is 30.

The square root of 66913113 is about 8180.0435817910. The cubic root of 66913113 is about 405.9791640807.

The spelling of 66913113 in words is "sixty-six million, nine hundred thirteen thousand, one hundred thirteen".