780616368 has 120 divisors (see below), whose sum is σ = 2628204800. Its totient is φ = 211289472.

The previous prime is 780616357. The next prime is 780616381. The reversal of 780616368 is 863616087.

780616368 is a `hidden beast` number, since 7 + 8 + 0 + 6 + 1 + 636 + 8 = 666.

It is a super-2 number, since 2×780616368² = 1218723827979022848, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1228 + ... + 39531.

Almost surely, 2^780616368 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 780616368, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314102400).

780616368 is an abundant number, since it is smaller than the sum of its proper divisors (1847588432).

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

780616368 is a wasteful number, since it uses less digits than its factorization.

780616368 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40799 (or 40790 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 45.

The square root of 780616368 is about 27939.5126657571. The cubic root of 780616368 is about 920.7588131546.

The spelling of 780616368 in words is "seven hundred eighty million, six hundred sixteen thousand, three hundred sixty-eight".