797597891 has 8 divisors (see below), whose sum is σ = 846955440. Its totient is φ = 748511488.

The previous prime is 797597881. The next prime is 797597897. The reversal of 797597891 is 198795797.

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-797597891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (797597897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61706 + ... + 73503.

It is an arithmetic number, because the mean of its divisors is an integer number (105869430).

Almost surely, 2^797597891 is an apocalyptic number.

797597891 is a deficient number, since it is larger than the sum of its proper divisors (49357549).

797597891 is a wasteful number, since it uses less digits than its factorization.

797597891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135573.

The product of its digits is 10001880, while the sum is 62.

The square root of 797597891 is about 28241.7756346870. The cubic root of 797597891 is about 927.3877016922.

The spelling of 797597891 in words is "seven hundred ninety-seven million, five hundred ninety-seven thousand, eight hundred ninety-one".