656344332 has 72 divisors (see below), whose sum is σ = 1947379616. Its totient is φ = 182456064.

The previous prime is 656344321. The next prime is 656344343. The reversal of 656344332 is 233443656.

It is an interprime number because it is at equal distance from previous prime (656344321) and next prime (656344343).

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

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 25873 + ... + 44520.

Almost surely, 2^656344332 is an apocalyptic number.

It is an amenable number.

656344332 is an abundant number, since it is smaller than the sum of its proper divisors (1291035284).

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

656344332 is a wasteful number, since it uses less digits than its factorization.

656344332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70447 (or 70442 counting only the distinct ones).

The product of its digits is 155520, while the sum is 36.

The square root of 656344332 is about 25619.2180208530. The cubic root of 656344332 is about 869.0482973912.

Adding to 656344332 its reverse (233443656), we get a palindrome (889787988).

The spelling of 656344332 in words is "six hundred fifty-six million, three hundred forty-four thousand, three hundred thirty-two".