609909504 has 36 divisors (see below), whose sum is σ = 1623250776. Its totient is φ = 203302912.

The previous prime is 609909473. The next prime is 609909539. The reversal of 609909504 is 405909906.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 396309 + ... + 397844.

Almost surely, 2^609909504 is an apocalyptic number.

609909504 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

609909504 is an abundant number, since it is smaller than the sum of its proper divisors (1013341272).

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

609909504 is an equidigital number, since it uses as much as digits as its factorization.

609909504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 794172 (or 794158 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 609909504 is about 24696.3459645349. The cubic root of 609909504 is about 848.0506674366.

The spelling of 609909504 in words is "six hundred nine million, nine hundred nine thousand, five hundred four".