790783621 has 2 divisors, whose sum is σ = 790783622. Its totient is φ = 790783620.

The previous prime is 790783583. The next prime is 790783639. The reversal of 790783621 is 126387097.

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., 498852225 + 291931396 = 22335^2 + 17086^2 .

It is a cyclic number.

It is not a de Polignac number, because 790783621 - 2¹⁵ = 790750853 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (790783921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395391810 + 395391811.

It is an arithmetic number, because the mean of its divisors is an integer number (395391811).

Almost surely, 2^790783621 is an apocalyptic number.

It is an amenable number.

790783621 is a deficient number, since it is larger than the sum of its proper divisors (1).

790783621 is an equidigital number, since it uses as much as digits as its factorization.

790783621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 790783621 is about 28120.8751819711. The cubic root of 790783621 is about 924.7391018766.

The spelling of 790783621 in words is "seven hundred ninety million, seven hundred eighty-three thousand, six hundred twenty-one".