6920831 has 2 divisors, whose sum is σ = 6920832. Its totient is φ = 6920830.

The previous prime is 6920827. The next prime is 6920833. The reversal of 6920831 is 1380296.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6920831 - 2² = 6920827 is a prime.

It is a super-2 number, since 2×6920831² = 95795803461122, which contains 22 as substring.

Together with 6920833, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 6920794 and 6920803.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6920833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3460415 + 3460416.

It is an arithmetic number, because the mean of its divisors is an integer number (3460416).

Almost surely, 2^6920831 is an apocalyptic number.

6920831 is a deficient number, since it is larger than the sum of its proper divisors (1).

6920831 is an equidigital number, since it uses as much as digits as its factorization.

6920831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 6920831 is about 2630.7472322517. The cubic root of 6920831 is about 190.5692163567.

The spelling of 6920831 in words is "six million, nine hundred twenty thousand, eight hundred thirty-one".