664107433 has 8 divisors (see below), whose sum is σ = 725124096. Its totient is φ = 603198000.

The previous prime is 664107407. The next prime is 664107439. The reversal of 664107433 is 334701466.

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

It is a cyclic number.

It is not a de Polignac number, because 664107433 - 2²¹ = 662010281 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664107439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13566 + ... + 38887.

It is an arithmetic number, because the mean of its divisors is an integer number (90640512).

Almost surely, 2^664107433 is an apocalyptic number.

It is an amenable number.

664107433 is a deficient number, since it is larger than the sum of its proper divisors (61016663).

664107433 is a wasteful number, since it uses less digits than its factorization.

664107433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53615.

The product of its (nonzero) digits is 36288, while the sum is 34.

The square root of 664107433 is about 25770.2819736223. The cubic root of 664107433 is about 872.4611829924.

Adding to 664107433 its reverse (334701466), we get a palindrome (998808899).

The spelling of 664107433 in words is "six hundred sixty-four million, one hundred seven thousand, four hundred thirty-three".