655670800 has 60 divisors (see below), whose sum is σ = 1597504896. Its totient is φ = 258563200.

The previous prime is 655670789. The next prime is 655670803. The reversal of 655670800 is 8076556.

It is a self number, because there is not a number n which added to its sum of digits gives 655670800.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655670803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16857 + ... + 39943.

Almost surely, 2^655670800 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 655670800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (798752448).

655670800 is an abundant number, since it is smaller than the sum of its proper divisors (941834096).

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

655670800 is a wasteful number, since it uses less digits than its factorization.

655670800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23176 (or 23165 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 37.

The square root of 655670800 is about 25606.0695929696. The cubic root of 655670800 is about 868.7509269697.

The spelling of 655670800 in words is "six hundred fifty-five million, six hundred seventy thousand, eight hundred".