655387344 has 60 divisors (see below), whose sum is σ = 1850451876. Its totient is φ = 216523776.

The previous prime is 655387319. The next prime is 655387379. The reversal of 655387344 is 443783556.

655387344 is a `hidden beast` number, since 6 + 5 + 538 + 73 + 44 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 286286400 + 369100944 = 16920^2 + 19212^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 655387344.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3867 + ... + 36410.

Almost surely, 2^655387344 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 655387344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (925225938).

655387344 is an abundant number, since it is smaller than the sum of its proper divisors (1195064532).

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

655387344 is a wasteful number, since it uses less digits than its factorization.

655387344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40404 (or 40395 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 45.

The square root of 655387344 is about 25600.5340569294. The cubic root of 655387344 is about 868.6257177145.

The spelling of 655387344 in words is "six hundred fifty-five million, three hundred eighty-seven thousand, three hundred forty-four".