655253600 has 72 divisors (see below), whose sum is σ = 1617787080. Its totient is φ = 259128320.

The previous prime is 655253591. The next prime is 655253617. The reversal of 655253600 is 6352556.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66599 + ... + 75801.

It is an arithmetic number, because the mean of its divisors is an integer number (22469265).

Almost surely, 2^655253600 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 655253600, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (808893540).

655253600 is an abundant number, since it is smaller than the sum of its proper divisors (962533480).

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

655253600 is a wasteful number, since it uses less digits than its factorization.

655253600 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9312 (or 9299 counting only the distinct ones).

The product of its (nonzero) digits is 27000, while the sum is 32.

The square root of 655253600 is about 25597.9217906454. The cubic root of 655253600 is about 868.5666272736.

The spelling of 655253600 in words is "six hundred fifty-five million, two hundred fifty-three thousand, six hundred".