796642561 has 8 divisors (see below), whose sum is σ = 935915904. Its totient is φ = 668511120.

The previous prime is 796642547. The next prime is 796642573. The reversal of 796642561 is 165246697.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-796642561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (796642501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2785321 + ... + 2785606.

It is an arithmetic number, because the mean of its divisors is an integer number (116989488).

Almost surely, 2^796642561 is an apocalyptic number.

It is an amenable number.

796642561 is a deficient number, since it is larger than the sum of its proper divisors (139273343).

796642561 is a wasteful number, since it uses less digits than its factorization.

796642561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5570951.

The product of its digits is 544320, while the sum is 46.

The square root of 796642561 is about 28224.8571475570. The cubic root of 796642561 is about 927.0172914636.

The spelling of 796642561 in words is "seven hundred ninety-six million, six hundred forty-two thousand, five hundred sixty-one".