9931066613 has 16 divisors (see below), whose sum is σ = 11374949376. Its totient is φ = 8589162240.

The previous prime is 9931066577. The next prime is 9931066619. The reversal of 9931066613 is 3166601399.

It is a cyclic number.

It is not a de Polignac number, because 9931066613 - 2²⁰ = 9930018037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9931066619) 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, 51473 + ... + 150038.

It is an arithmetic number, because the mean of its divisors is an integer number (710934336).

Almost surely, 2^9931066613 is an apocalyptic number.

It is an amenable number.

9931066613 is a deficient number, since it is larger than the sum of its proper divisors (1443882763).

9931066613 is a wasteful number, since it uses less digits than its factorization.

9931066613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201764.

The product of its (nonzero) digits is 157464, while the sum is 44.

The square root of 9931066613 is about 99654.7370324161. The cubic root of 9931066613 is about 2149.4728552955.

The spelling of 9931066613 in words is "nine billion, nine hundred thirty-one million, sixty-six thousand, six hundred thirteen".