6790649 has 2 divisors, whose sum is σ = 6790650. Its totient is φ = 6790648.

The previous prime is 6790631. The next prime is 6790691. The reversal of 6790649 is 9460976.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6786025 + 4624 = 2605^2 + 68^2 .

It is a cyclic number.

It is not a de Polignac number, because 6790649 - 2¹⁶ = 6725113 is a prime.

It is a super-2 number, since 2×6790649² = 92225827682402, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6790349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3395324 + 3395325.

It is an arithmetic number, because the mean of its divisors is an integer number (3395325).

Almost surely, 2^6790649 is an apocalyptic number.

It is an amenable number.

6790649 is a deficient number, since it is larger than the sum of its proper divisors (1).

6790649 is an equidigital number, since it uses as much as digits as its factorization.

6790649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 6790649 is about 2605.8873728540. The cubic root of 6790649 is about 189.3667653911.

The spelling of 6790649 in words is "six million, seven hundred ninety thousand, six hundred forty-nine".