56664994 has 8 divisors (see below), whose sum is σ = 85519440. Its totient is φ = 28158516.

The previous prime is 56664989. The next prime is 56664997. The reversal of 56664994 is 49946665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (56664997) 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 3 ways as a sum of consecutive naturals, for example, 86584 + ... + 87235.

It is an arithmetic number, because the mean of its divisors is an integer number (10689930).

Almost surely, 2^56664994 is an apocalyptic number.

56664994 is a deficient number, since it is larger than the sum of its proper divisors (28854446).

56664994 is a wasteful number, since it uses less digits than its factorization.

56664994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173984.

The product of its digits is 1399680, while the sum is 49.

The square root of 56664994 is about 7527.6154258836. The cubic root of 56664994 is about 384.0946715723.

The spelling of 56664994 in words is "fifty-six million, six hundred sixty-four thousand, nine hundred ninety-four".