609651960 has 256 divisors, whose sum is σ = 2047731840. Its totient is φ = 144506880.

The previous prime is 609651941. The next prime is 609651967. The reversal of 609651960 is 69156906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609651967) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3094582 + ... + 3094778.

Almost surely, 2^609651960 is an apocalyptic number.

609651960 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609651960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1023865920).

609651960 is an abundant number, since it is smaller than the sum of its proper divisors (1438079880).

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

609651960 is a wasteful number, since it uses less digits than its factorization.

609651960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 306 (or 302 counting only the distinct ones).

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

The square root of 609651960 is about 24691.1312013038. The cubic root of 609651960 is about 847.9312829982.

The spelling of 609651960 in words is "six hundred nine million, six hundred fifty-one thousand, nine hundred sixty".