771480980 has 12 divisors (see below), whose sum is σ = 1620110100. Its totient is φ = 308592384.

The previous prime is 771480979. The next prime is 771480989. The reversal of 771480980 is 89084177.

It can be written as a sum of positive squares in 2 ways, for example, as 162970756 + 608510224 = 12766^2 + 24668^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (771480989) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19287005 + ... + 19287044.

It is an arithmetic number, because the mean of its divisors is an integer number (135009175).

Almost surely, 2^771480980 is an apocalyptic number.

It is an amenable number.

771480980 is an abundant number, since it is smaller than the sum of its proper divisors (848629120).

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

771480980 is a wasteful number, since it uses less digits than its factorization.

771480980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38574058 (or 38574056 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 44.

The square root of 771480980 is about 27775.5464392692. The cubic root of 771480980 is about 917.1528948081.

The spelling of 771480980 in words is "seven hundred seventy-one million, four hundred eighty thousand, nine hundred eighty".