820597260 has 48 divisors (see below), whose sum is σ = 2625912576. Its totient is φ = 187564992.

The previous prime is 820597223. The next prime is 820597277. The reversal of 820597260 is 62795028.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 976482 + ... + 977321.

It is an arithmetic number, because the mean of its divisors is an integer number (54706512).

Almost surely, 2^820597260 is an apocalyptic number.

It is an amenable number.

820597260 is an abundant number, since it is smaller than the sum of its proper divisors (1805315316).

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

820597260 is a wasteful number, since it uses less digits than its factorization.

820597260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1953822 (or 1953820 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 820597260 is about 28646.0688402440. The cubic root of 820597260 is about 936.2173549211.

The spelling of 820597260 in words is "eight hundred twenty million, five hundred ninety-seven thousand, two hundred sixty".