771040080 has 160 divisors (see below), whose sum is σ = 2667686400. Its totient is φ = 204691968.

The previous prime is 771040057. The next prime is 771040097. The reversal of 771040080 is 80040177.

771040080 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 580377 + ... + 581703.

It is an arithmetic number, because the mean of its divisors is an integer number (16673040).

Almost surely, 2^771040080 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 771040080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1333843200).

771040080 is an abundant number, since it is smaller than the sum of its proper divisors (1896646320).

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

771040080 is a wasteful number, since it uses less digits than its factorization.

771040080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1618 (or 1606 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 27.

The square root of 771040080 is about 27767.6084674212. The cubic root of 771040080 is about 916.9781444344.

The spelling of 771040080 in words is "seven hundred seventy-one million, forty thousand, eighty".