790681 has 4 divisors (see below), whose sum is σ = 807552. Its totient is φ = 773812.

The previous prime is 790651. The next prime is 790693. The reversal of 790681 is 186097.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 790681 - 2⁵ = 790649 is a prime.

It is a super-2 number, since 2×790681² = 1250352887522, which contains 22 as substring.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

790681 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (790651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8365 + ... + 8458.

It is an arithmetic number, because the mean of its divisors is an integer number (201888).

2⁷⁹⁰⁶⁸¹ is an apocalyptic number.

It is an amenable number.

790681 is a deficient number, since it is larger than the sum of its proper divisors (16871).

790681 is a wasteful number, since it uses less digits than its factorization.

790681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16870.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 790681 is about 889.2024516385. The cubic root of 790681 is about 92.4699098622.

The spelling of 790681 in words is "seven hundred ninety thousand, six hundred eighty-one".