6890531 has 2 divisors, whose sum is σ = 6890532. Its totient is φ = 6890530.

The previous prime is 6890519. The next prime is 6890537. The reversal of 6890531 is 1350986.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6890531 is a prime.

It is a super-2 number, since 2×6890531² = 94958834923922, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6890537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3445265 + 3445266.

It is an arithmetic number, because the mean of its divisors is an integer number (3445266).

Almost surely, 2^6890531 is an apocalyptic number.

6890531 is a deficient number, since it is larger than the sum of its proper divisors (1).

6890531 is an equidigital number, since it uses as much as digits as its factorization.

6890531 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 6890531 is about 2624.9820951770. The cubic root of 6890531 is about 190.2906999699.

The spelling of 6890531 in words is "six million, eight hundred ninety thousand, five hundred thirty-one".