664004033 has 8 divisors (see below), whose sum is σ = 827849280. Its totient is φ = 517405680.

The previous prime is 664004021. The next prime is 664004053. The reversal of 664004033 is 330400466.

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

It is not a de Polignac number, because 664004033 - 2⁴ = 664004017 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 664003993 and 664004011.

It is not an unprimeable number, because it can be changed into a prime (664004053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4311638 + ... + 4311791.

It is an arithmetic number, because the mean of its divisors is an integer number (103481160).

Almost surely, 2^664004033 is an apocalyptic number.

It is an amenable number.

664004033 is a deficient number, since it is larger than the sum of its proper divisors (163845247).

664004033 is a wasteful number, since it uses less digits than its factorization.

664004033 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8623447.

The product of its (nonzero) digits is 5184, while the sum is 26.

The square root of 664004033 is about 25768.2757087082. The cubic root of 664004033 is about 872.4159005756.

Adding to 664004033 its reverse (330400466), we get a palindrome (994404499).

The spelling of 664004033 in words is "six hundred sixty-four million, four thousand, thirty-three".