609391960 has 32 divisors (see below), whose sum is σ = 1371938400. Its totient is φ = 243613440.

The previous prime is 609391949. The next prime is 609391973. The reversal of 609391960 is 69193906.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87901 + ... + 94579.

It is an arithmetic number, because the mean of its divisors is an integer number (42873075).

Almost surely, 2^609391960 is an apocalyptic number.

It is an amenable number.

609391960 is an abundant number, since it is smaller than the sum of its proper divisors (762546440).

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

609391960 is a wasteful number, since it uses less digits than its factorization.

609391960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8971 (or 8967 counting only the distinct ones).

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 609391960 is about 24685.8655914675. The cubic root of 609391960 is about 847.8107259723.

The spelling of 609391960 in words is "six hundred nine million, three hundred ninety-one thousand, nine hundred sixty".