797801556 has 24 divisors (see below), whose sum is σ = 1862086240. Its totient is φ = 265855392.

The previous prime is 797801549. The next prime is 797801573. The reversal of 797801556 is 655108797.

It is a super-2 number, since 2×797801556² = 1272974645512042272, which contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 44655 + ... + 59913.

Almost surely, 2^797801556 is an apocalyptic number.

It is an amenable number.

797801556 is an abundant number, since it is smaller than the sum of its proper divisors (1064284684).

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

797801556 is a wasteful number, since it uses less digits than its factorization.

797801556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19623 (or 19621 counting only the distinct ones).

The product of its (nonzero) digits is 529200, while the sum is 48.

The square root of 797801556 is about 28245.3811445341. The cubic root of 797801556 is about 927.4666304959.

The spelling of 797801556 in words is "seven hundred ninety-seven million, eight hundred one thousand, five hundred fifty-six".