797969920 has 160 divisors (see below), whose sum is σ = 2138970240. Its totient is φ = 282992640.

The previous prime is 797969917. The next prime is 797969929. The reversal of 797969920 is 29969797.

It is a tau number, because it is divible by the number of its divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (797969929) 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, 1210551 + ... + 1211209.

It is an arithmetic number, because the mean of its divisors is an integer number (13368564).

Almost surely, 2^797969920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 797969920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1069485120).

797969920 is an abundant number, since it is smaller than the sum of its proper divisors (1341000320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

797969920 is a wasteful number, since it uses less digits than its factorization.

797969920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 736 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 3857868, while the sum is 58.

The square root of 797969920 is about 28248.3613684051. The cubic root of 797969920 is about 927.5318685272.

The spelling of 797969920 in words is "seven hundred ninety-seven million, nine hundred sixty-nine thousand, nine hundred twenty".