56664233 has 4 divisors (see below), whose sum is σ = 56684880. Its totient is φ = 56643588.

The previous prime is 56664229. The next prime is 56664259. The reversal of 56664233 is 33246665.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 33246665 = 5 ⋅6649333.

It is a cyclic number.

It is not a de Polignac number, because 56664233 - 2² = 56664229 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56664193 and 56664202.

It is not an unprimeable number, because it can be changed into a prime (56664533) 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, 5435 + ... + 11952.

It is an arithmetic number, because the mean of its divisors is an integer number (14171220).

Almost surely, 2^56664233 is an apocalyptic number.

It is an amenable number.

56664233 is a deficient number, since it is larger than the sum of its proper divisors (20647).

56664233 is a wasteful number, since it uses less digits than its factorization.

56664233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20646.

The product of its digits is 77760, while the sum is 35.

The square root of 56664233 is about 7527.5648784982. The cubic root of 56664233 is about 384.0929521254.

The spelling of 56664233 in words is "fifty-six million, six hundred sixty-four thousand, two hundred thirty-three".