780005604 has 48 divisors (see below), whose sum is σ = 2099478528. Its totient is φ = 220773408.

The previous prime is 780005593. The next prime is 780005617. The reversal of 780005604 is 406500087.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34404 + ... + 52379.

It is an arithmetic number, because the mean of its divisors is an integer number (43739136).

Almost surely, 2^780005604 is an apocalyptic number.

It is an amenable number.

780005604 is an abundant number, since it is smaller than the sum of its proper divisors (1319472924).

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

780005604 is a wasteful number, since it uses less digits than its factorization.

780005604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86904 (or 86902 counting only the distinct ones).

The product of its (nonzero) digits is 6720, while the sum is 30.

The square root of 780005604 is about 27928.5804150515. The cubic root of 780005604 is about 920.5186127651.

The spelling of 780005604 in words is "seven hundred eighty million, five thousand, six hundred four".