655784352 has 72 divisors (see below), whose sum is σ = 1867880196. Its totient is φ = 218244096.

The previous prime is 655784309. The next prime is 655784387. The reversal of 655784352 is 253487556.

655784352 is a `hidden beast` number, since 6 + 557 + 8 + 43 + 52 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 651474576 + 4309776 = 25524^2 + 2076^2 .

It is a tau number, because it is divible by the number of its divisors (72).

It is a junction number, because it is equal to n+sod(n) for n = 655784298 and 655784307.

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, 228108 + ... + 230964.

Almost surely, 2^655784352 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 655784352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (933940098).

655784352 is an abundant number, since it is smaller than the sum of its proper divisors (1212095844).

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

655784352 is a wasteful number, since it uses less digits than its factorization.

655784352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3670 (or 3659 counting only the distinct ones).

The product of its digits is 1008000, while the sum is 45.

The square root of 655784352 is about 25608.2867837737. The cubic root of 655784352 is about 868.8010754644.

It can be divided in two parts, 6557 and 84352, that added together give a palindrome (90909).

The spelling of 655784352 in words is "six hundred fifty-five million, seven hundred eighty-four thousand, three hundred fifty-two".