6890670931 has 2 divisors, whose sum is σ = 6890670932. Its totient is φ = 6890670930.

The previous prime is 6890670907. The next prime is 6890670971. The reversal of 6890670931 is 1390760986.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6890670931 - 2⁹ = 6890670419 is a prime.

It is a super-2 number, since 2×6890670931² = 94962691758656813522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6890670971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445335465 + 3445335466.

It is an arithmetic number, because the mean of its divisors is an integer number (3445335466).

Almost surely, 2^6890670931 is an apocalyptic number.

6890670931 is a deficient number, since it is larger than the sum of its proper divisors (1).

6890670931 is an equidigital number, since it uses as much as digits as its factorization.

6890670931 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 6890670931 is about 83010.0652391022. The cubic root of 6890670931 is about 1902.9198808488.

The spelling of 6890670931 in words is "six billion, eight hundred ninety million, six hundred seventy thousand, nine hundred thirty-one".