6986639633 has 4 divisors (see below), whose sum is σ = 6991302000. Its totient is φ = 6981977268.

The previous prime is 6986639609. The next prime is 6986639677. The reversal of 6986639633 is 3369366896.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6986639633 is a prime.

It is a super-2 number, since 2×6986639633² = 97626266722812749378, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6986630633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2328935 + ... + 2331932.

It is an arithmetic number, because the mean of its divisors is an integer number (1747825500).

Almost surely, 2^6986639633 is an apocalyptic number.

It is an amenable number.

6986639633 is a deficient number, since it is larger than the sum of its proper divisors (4662367).

6986639633 is a wasteful number, since it uses less digits than its factorization.

6986639633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4662366.

The product of its digits is 22674816, while the sum is 59.

The square root of 6986639633 is about 83586.1210548737. The cubic root of 6986639633 is about 1911.7133856404.

The spelling of 6986639633 in words is "six billion, nine hundred eighty-six million, six hundred thirty-nine thousand, six hundred thirty-three".