797781597 has 16 divisors (see below), whose sum is σ = 1071221760. Its totient is φ = 528108800.

The previous prime is 797781587. The next prime is 797781601. The reversal of 797781597 is 795187797.

It is a cyclic number.

It is not a de Polignac number, because 797781597 - 2⁴ = 797781581 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 797781597.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797781587) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 462697 + ... + 464417.

It is an arithmetic number, because the mean of its divisors is an integer number (66951360).

Almost surely, 2^797781597 is an apocalyptic number.

It is an amenable number.

797781597 is a deficient number, since it is larger than the sum of its proper divisors (273440163).

797781597 is a wasteful number, since it uses less digits than its factorization.

797781597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2724.

The product of its digits is 7779240, while the sum is 60.

The square root of 797781597 is about 28245.0278279204. The cubic root of 797781597 is about 927.4588961328.

The spelling of 797781597 in words is "seven hundred ninety-seven million, seven hundred eighty-one thousand, five hundred ninety-seven".