790649 has 2 divisors, whose sum is σ = 790650. Its totient is φ = 790648.

The previous prime is 790637. The next prime is 790651. The reversal of 790649 is 946097.

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., 547600 + 243049 = 740^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 790649 - 2⁴ = 790633 is a prime.

It is a Sophie Germain prime.

Together with 790651, it forms a pair of twin primes.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (795649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395324 + 395325.

It is an arithmetic number, because the mean of its divisors is an integer number (395325).

2⁷⁹⁰⁶⁴⁹ is an apocalyptic number.

It is an amenable number.

790649 is a deficient number, since it is larger than the sum of its proper divisors (1).

790649 is an equidigital number, since it uses as much as digits as its factorization.

790649 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 790649 is about 889.1844578039. The cubic root of 790649 is about 92.4686623818.

The spelling of 790649 in words is "seven hundred ninety thousand, six hundred forty-nine".