56643706 has 16 divisors (see below), whose sum is σ = 99086400. Its totient is φ = 24275580.

The previous prime is 56643701. The next prime is 56643709. The reversal of 56643706 is 60734665.

It is not an unprimeable number, because it can be changed into a prime (56643701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40600 + ... + 41971.

It is an arithmetic number, because the mean of its divisors is an integer number (6192900).

Almost surely, 2^56643706 is an apocalyptic number.

56643706 is a deficient number, since it is larger than the sum of its proper divisors (42442694).

56643706 is an equidigital number, since it uses as much as digits as its factorization.

56643706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82594 (or 82580 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 56643706 is about 7526.2012994604. The cubic root of 56643706 is about 384.0465664376.

The spelling of 56643706 in words is "fifty-six million, six hundred forty-three thousand, seven hundred six".