774220680 has 160 divisors (see below), whose sum is σ = 2634508800. Its totient is φ = 203900544.

The previous prime is 774220679. The next prime is 774220693. The reversal of 774220680 is 86022477.

It is a super-2 number, since 2×774220680² = 1198835322679324800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 267481 + ... + 270359.

It is an arithmetic number, because the mean of its divisors is an integer number (16465680).

Almost surely, 2^774220680 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 774220680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1317254400).

774220680 is an abundant number, since it is smaller than the sum of its proper divisors (1860288120).

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

774220680 is a wasteful number, since it uses less digits than its factorization.

774220680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2985 (or 2972 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 36.

The square root of 774220680 is about 27824.8212932267. The cubic root of 774220680 is about 918.2372832731.

The spelling of 774220680 in words is "seven hundred seventy-four million, two hundred twenty thousand, six hundred eighty".