664929033 has 4 divisors (see below), whose sum is σ = 886572048. Its totient is φ = 443286020.

The previous prime is 664928993. The next prime is 664929053. The reversal of 664929033 is 330929466.

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.

It is a cyclic number.

It is not a de Polignac number, because 664929033 - 2¹² = 664924937 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (664929053) 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, 110821503 + ... + 110821508.

It is an arithmetic number, because the mean of its divisors is an integer number (221643012).

Almost surely, 2^664929033 is an apocalyptic number.

It is an amenable number.

664929033 is a deficient number, since it is larger than the sum of its proper divisors (221643015).

664929033 is a wasteful number, since it uses less digits than its factorization.

664929033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221643014.

The product of its (nonzero) digits is 209952, while the sum is 42.

The square root of 664929033 is about 25786.2178886319. The cubic root of 664929033 is about 872.8208229509.

The spelling of 664929033 in words is "six hundred sixty-four million, nine hundred twenty-nine thousand, thirty-three".