76330640 has 20 divisors (see below), whose sum is σ = 177468924. Its totient is φ = 30532224.

The previous prime is 76330637. The next prime is 76330691. The reversal of 76330640 is 4603367.

It can be written as a sum of positive squares in 2 ways, for example, as 51609856 + 24720784 = 7184^2 + 4972^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 476987 + ... + 477146.

Almost surely, 2^76330640 is an apocalyptic number.

It is an amenable number.

76330640 is an abundant number, since it is smaller than the sum of its proper divisors (101138284).

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

76330640 is a wasteful number, since it uses less digits than its factorization.

76330640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954146 (or 954140 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 29.

The square root of 76330640 is about 8736.7408110805. The cubic root of 76330640 is about 424.1957385073.

The spelling of 76330640 in words is "seventy-six million, three hundred thirty thousand, six hundred forty".