6389680631 has 4 divisors (see below), whose sum is σ = 6396221712. Its totient is φ = 6383139552.

The previous prime is 6389680579. The next prime is 6389680657. The reversal of 6389680631 is 1360869836.

6389680631 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6389680631 - 2²⁶ = 6322571767 is a prime.

It is a super-2 number, since 2×6389680631² = 81656037132353116322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6389680631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6389680681) 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, 3269075 + ... + 3271028.

It is an arithmetic number, because the mean of its divisors is an integer number (1599055428).

Almost surely, 2^6389680631 is an apocalyptic number.

6389680631 is a deficient number, since it is larger than the sum of its proper divisors (6541081).

6389680631 is an equidigital number, since it uses as much as digits as its factorization.

6389680631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6541080.

The product of its (nonzero) digits is 1119744, while the sum is 50.

The square root of 6389680631 is about 79935.4779243860. The cubic root of 6389680631 is about 1855.6371160545.

The spelling of 6389680631 in words is "six billion, three hundred eighty-nine million, six hundred eighty thousand, six hundred thirty-one".