790781 has 2 divisors, whose sum is σ = 790782. Its totient is φ = 790780.

The previous prime is 790753. The next prime is 790793. The reversal of 790781 is 187097.

790781 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 737881 + 52900 = 859^2 + 230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-790781 is a prime.

It is a super-2 number, since 2×790781² = 1250669179922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (790481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 395390 + 395391.

It is an arithmetic number, because the mean of its divisors is an integer number (395391).

2⁷⁹⁰⁷⁸¹ is an apocalyptic number.

It is an amenable number.

790781 is a deficient number, since it is larger than the sum of its proper divisors (1).

790781 is an equidigital number, since it uses as much as digits as its factorization.

790781 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3528, while the sum is 32.

The square root of 790781 is about 889.2586800251. The cubic root of 790781 is about 92.4738080213.

The spelling of 790781 in words is "seven hundred ninety thousand, seven hundred eighty-one".