764040080 has 40 divisors (see below), whose sum is σ = 1796369400. Its totient is φ = 302179328.

The previous prime is 764040041. The next prime is 764040083. The reversal of 764040080 is 80040467.

It can be written as a sum of positive squares in 4 ways, for example, as 512656 + 763527424 = 716^2 + 27632^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (764040083) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 46535 + ... + 60774.

It is an arithmetic number, because the mean of its divisors is an integer number (44909235).

Almost surely, 2^764040080 is an apocalyptic number.

It is an amenable number.

764040080 is an abundant number, since it is smaller than the sum of its proper divisors (1032329320).

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

764040080 is a wasteful number, since it uses less digits than its factorization.

764040080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107411 (or 107405 counting only the distinct ones).

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 764040080 is about 27641.2749344165. The cubic root of 764040080 is about 914.1947308086.

The spelling of 764040080 in words is "seven hundred sixty-four million, forty thousand, eighty".