6600997139 has 16 divisors (see below), whose sum is σ = 7452781920. Its totient is φ = 5791349760.

The previous prime is 6600997127. The next prime is 6600997147. The reversal of 6600997139 is 9317990066.

6600997139 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6600997139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6600997159) 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, 1124099 + ... + 1129955.

It is an arithmetic number, because the mean of its divisors is an integer number (465798870).

Almost surely, 2^6600997139 is an apocalyptic number.

6600997139 is a deficient number, since it is larger than the sum of its proper divisors (851784781).

6600997139 is a wasteful number, since it uses less digits than its factorization.

6600997139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9430.

The product of its (nonzero) digits is 551124, while the sum is 50.

The square root of 6600997139 is about 81246.5207808925. The cubic root of 6600997139 is about 1875.8719158047.

The spelling of 6600997139 in words is "six billion, six hundred million, nine hundred ninety-seven thousand, one hundred thirty-nine".