609555456 has 110 divisors (see below), whose sum is σ = 1820499450. Its totient is φ = 203157504.

The previous prime is 609555433. The next prime is 609555461. The reversal of 609555456 is 654555906.

609555456 is a `hidden beast` number, since 6 + 0 + 95 + 554 + 5 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 557715456 + 51840000 = 23616^2 + 7200^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 79270 + ... + 86618.

It is an arithmetic number, because the mean of its divisors is an integer number (16549995).

Almost surely, 2^609555456 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 609555456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (910249725).

609555456 is an abundant number, since it is smaller than the sum of its proper divisors (1210943994).

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

609555456 is an equidigital number, since it uses as much as digits as its factorization.

609555456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7381 (or 7354 counting only the distinct ones).

The product of its (nonzero) digits is 810000, while the sum is 45.

The square root of 609555456 is about 24689.1769000103. The cubic root of 609555456 is about 847.8865399405.

The spelling of 609555456 in words is "six hundred nine million, five hundred fifty-five thousand, four hundred fifty-six".