656612352 has 352 divisors, whose sum is σ = 2263818240. Its totient is φ = 185794560.

The previous prime is 656612329. The next prime is 656612353. The reversal of 656612352 is 253216656.

It is a happy number.

656612352 is a `hidden beast` number, since 6 + 5 + 6 + 612 + 35 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (352).

It is a super-2 number, since 2×656612352² = 862279561597943808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

Its product of digits (64800) is a multiple of the sum of its prime divisors (160).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (656612353) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5170113 + ... + 5170239.

Almost surely, 2^656612352 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 656612352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1131909120).

656612352 is an abundant number, since it is smaller than the sum of its proper divisors (1607205888).

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

656612352 is a wasteful number, since it uses less digits than its factorization.

656612352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184 (or 160 counting only the distinct ones).

The product of its digits is 64800, while the sum is 36.

The square root of 656612352 is about 25624.4483257689. The cubic root of 656612352 is about 869.1665740415.

The spelling of 656612352 in words is "six hundred fifty-six million, six hundred twelve thousand, three hundred fifty-two".