655632450 has 108 divisors (see below), whose sum is σ = 1936317474. Its totient is φ = 158928000.

The previous prime is 655632413. The next prime is 655632533. The reversal of 655632450 is 54236556.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 522991161 + 132641289 = 22869^2 + 11517^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 53 ways as a sum of consecutive naturals, for example, 48430 + ... + 60470.

Almost surely, 2^655632450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655632450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (968158737).

655632450 is an abundant number, since it is smaller than the sum of its proper divisors (1280685024).

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

655632450 is a wasteful number, since it uses less digits than its factorization.

655632450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12081 (or 12062 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 36.

The square root of 655632450 is about 25605.3207361283. The cubic root of 655632450 is about 868.7339889739.

The spelling of 655632450 in words is "six hundred fifty-five million, six hundred thirty-two thousand, four hundred fifty".