609980256 has 108 divisors (see below), whose sum is σ = 1831044852. Its totient is φ = 192592512.

The previous prime is 609980243. The next prime is 609980257. The reversal of 609980256 is 652089906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (609980257) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 101035 + ... + 106901.

It is an arithmetic number, because the mean of its divisors is an integer number (16954119).

Almost surely, 2^609980256 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 609980256, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (915522426).

609980256 is an abundant number, since it is smaller than the sum of its proper divisors (1221064596).

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

609980256 is a wasteful number, since it uses less digits than its factorization.

609980256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5921 (or 5891 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 45.

The square root of 609980256 is about 24697.7783616260. The cubic root of 609980256 is about 848.0834586187.

The spelling of 609980256 in words is "six hundred nine million, nine hundred eighty thousand, two hundred fifty-six".