799779960 has 512 divisors, whose sum is σ = 3317760000. Its totient is φ = 170698752.

The previous prime is 799779947. The next prime is 799779961. The reversal of 799779960 is 69977997.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (799779961) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 6297417 + ... + 6297543.

It is an arithmetic number, because the mean of its divisors is an integer number (6480000).

Almost surely, 2^799779960 is an apocalyptic number.

799779960 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 799779960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1658880000).

799779960 is an abundant number, since it is smaller than the sum of its proper divisors (2517980040).

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

799779960 is a wasteful number, since it uses less digits than its factorization.

799779960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185 (or 161 counting only the distinct ones).

The product of its (nonzero) digits is 13502538, while the sum is 63.

The square root of 799779960 is about 28280.3811855498. The cubic root of 799779960 is about 928.2326476508.

The spelling of 799779960 in words is "seven hundred ninety-nine million, seven hundred seventy-nine thousand, nine hundred sixty".