6890691031 has 8 divisors (see below), whose sum is σ = 8289553280. Its totient is φ = 5595448248.

The previous prime is 6890691013. The next prime is 6890691043. The reversal of 6890691031 is 1301960986.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6890691031 - 2¹⁹ = 6890166743 is a prime.

It is a super-2 number, since 2×6890691031² = 94963245769407685922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6890691011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25904721 + ... + 25904986.

It is an arithmetic number, because the mean of its divisors is an integer number (1036194160).

Almost surely, 2^6890691031 is an apocalyptic number.

6890691031 is a deficient number, since it is larger than the sum of its proper divisors (1398862249).

6890691031 is a wasteful number, since it uses less digits than its factorization.

6890691031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51809733.

The product of its (nonzero) digits is 69984, while the sum is 43.

The square root of 6890691031 is about 83010.1863086694. The cubic root of 6890691031 is about 1902.9217311114.

The spelling of 6890691031 in words is "six billion, eight hundred ninety million, six hundred ninety-one thousand, thirty-one".