799778980 has 216 divisors, whose sum is σ = 2313178560. Its totient is φ = 229582080.

The previous prime is 799778971. The next prime is 799778999. The reversal of 799778980 is 89877997.

It is an unprimeable number.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 1821601 + ... + 1822039.

It is an arithmetic number, because the mean of its divisors is an integer number (10709160).

Almost surely, 2^799778980 is an apocalyptic number.

799778980 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 799778980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156589280).

799778980 is an abundant number, since it is smaller than the sum of its proper divisors (1513399580).

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

799778980 is a wasteful number, since it uses less digits than its factorization.

799778980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499 (or 477 counting only the distinct ones).

The product of its (nonzero) digits is 16003008, while the sum is 64.

The square root of 799778980 is about 28280.3638590454. The cubic root of 799778980 is about 928.2322685181.

The spelling of 799778980 in words is "seven hundred ninety-nine million, seven hundred seventy-eight thousand, nine hundred eighty".