797560020 has 144 divisors (see below), whose sum is σ = 2521296960. Its totient is φ = 211631616.

The previous prime is 797560007. The next prime is 797560051. The reversal of 797560020 is 20065797.

797560020 is a `hidden beast` number, since 7 + 97 + 560 + 0 + 2 + 0 = 666.

It is a super-2 number, since 2×797560020² = 1272203971004800800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1841724 + ... + 1842156.

Almost surely, 2^797560020 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 797560020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1260648480).

797560020 is an abundant number, since it is smaller than the sum of its proper divisors (1723736940).

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

797560020 is a wasteful number, since it uses less digits than its factorization.

797560020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 836 (or 822 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 797560020 is about 28241.1051483472. The cubic root of 797560020 is about 927.3730235961.

The spelling of 797560020 in words is "seven hundred ninety-seven million, five hundred sixty thousand, twenty".