609542920 has 32 divisors (see below), whose sum is σ = 1567396800. Its totient is φ = 208986048.

The previous prime is 609542917. The next prime is 609542929. The reversal of 609542920 is 29245906.

It is a self number, because there is not a number n which added to its sum of digits gives 609542920.

It is not an unprimeable number, because it can be changed into a prime (609542929) by changing a digit.

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, 1088190 + ... + 1088749.

It is an arithmetic number, because the mean of its divisors is an integer number (48981150).

Almost surely, 2^609542920 is an apocalyptic number.

It is an amenable number.

609542920 is an abundant number, since it is smaller than the sum of its proper divisors (957853880).

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

609542920 is a wasteful number, since it uses less digits than its factorization.

609542920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2176957 (or 2176953 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 37.

The square root of 609542920 is about 24688.9230222786. The cubic root of 609542920 is about 847.8807274103.

The spelling of 609542920 in words is "six hundred nine million, five hundred forty-two thousand, nine hundred twenty".