56643332 has 12 divisors (see below), whose sum is σ = 104343120. Its totient is φ = 26831016.

The previous prime is 56643331. The next prime is 56643359. The reversal of 56643332 is 23334665.

It is not an unprimeable number, because it can be changed into a prime (56643331) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 372578 + ... + 372729.

It is an arithmetic number, because the mean of its divisors is an integer number (8695260).

Almost surely, 2^56643332 is an apocalyptic number.

It is an amenable number.

56643332 is a deficient number, since it is larger than the sum of its proper divisors (47699788).

56643332 is a wasteful number, since it uses less digits than its factorization.

56643332 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745330 (or 745328 counting only the distinct ones).

The product of its digits is 38880, while the sum is 32.

The square root of 56643332 is about 7526.1764528876. The cubic root of 56643332 is about 384.0457211908.

Adding to 56643332 its reverse (23334665), we get a palindrome (79977997).

The spelling of 56643332 in words is "fifty-six million, six hundred forty-three thousand, three hundred thirty-two".