77345480 has 32 divisors (see below), whose sum is σ = 174295800. Its totient is φ = 30890496.

The previous prime is 77345479. The next prime is 77345501. The reversal of 77345480 is 8454377.

It can be written as a sum of positive squares in 4 ways, for example, as 75446596 + 1898884 = 8686^2 + 1378^2 .

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 7 ways as a sum of consecutive naturals, for example, 37106 + ... + 39134.

Almost surely, 2^77345480 is an apocalyptic number.

It is an amenable number.

77345480 is an abundant number, since it is smaller than the sum of its proper divisors (96950320).

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

77345480 is a wasteful number, since it uses less digits than its factorization.

77345480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2993 (or 2989 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 38.

The square root of 77345480 is about 8794.6279057161. The cubic root of 77345480 is about 426.0674068800.

The spelling of 77345480 in words is "seventy-seven million, three hundred forty-five thousand, four hundred eighty".