609904698 has 32 divisors (see below), whose sum is σ = 1318173696. Its totient is φ = 187015488.

The previous prime is 609904681. The next prime is 609904709. The reversal of 609904698 is 896409906.

It is a self number, because there is not a number n which added to its sum of digits gives 609904698.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 9511 + ... + 36197.

It is an arithmetic number, because the mean of its divisors is an integer number (41192928).

Almost surely, 2^609904698 is an apocalyptic number.

609904698 is an abundant number, since it is smaller than the sum of its proper divisors (708268998).

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

609904698 is a wasteful number, since it uses less digits than its factorization.

609904698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26998.

The product of its (nonzero) digits is 839808, while the sum is 51.

The square root of 609904698 is about 24696.2486624993. The cubic root of 609904698 is about 848.0484399246.

The spelling of 609904698 in words is "six hundred nine million, nine hundred four thousand, six hundred ninety-eight".