6992257 has 2 divisors, whose sum is σ = 6992258. Its totient is φ = 6992256.

The previous prime is 6992233. The next prime is 6992261. The reversal of 6992257 is 7522996.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6990736 + 1521 = 2644^2 + 39^2 .

It is a cyclic number.

It is not a de Polignac number, because 6992257 - 2¹⁹ = 6467969 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (6992957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3496128 + 3496129.

It is an arithmetic number, because the mean of its divisors is an integer number (3496129).

Almost surely, 2^6992257 is an apocalyptic number.

It is an amenable number.

6992257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6992257 is an equidigital number, since it uses as much as digits as its factorization.

6992257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 68040, while the sum is 40.

The square root of 6992257 is about 2644.2876167316. The cubic root of 6992257 is about 191.2225597494. Note that the first 3 decimals are identical.

The spelling of 6992257 in words is "six million, nine hundred ninety-two thousand, two hundred fifty-seven".