664200633 has 4 divisors (see below), whose sum is σ = 885600848. Its totient is φ = 442800420.

The previous prime is 664200631. The next prime is 664200643. The reversal of 664200633 is 336002466.

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 not a de Polignac number, because 664200633 - 2¹ = 664200631 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 664200633.

It is not an unprimeable number, because it can be changed into a prime (664200631) 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, 110700103 + ... + 110700108.

It is an arithmetic number, because the mean of its divisors is an integer number (221400212).

Almost surely, 2^664200633 is an apocalyptic number.

It is an amenable number.

664200633 is a deficient number, since it is larger than the sum of its proper divisors (221400215).

664200633 is a wasteful number, since it uses less digits than its factorization.

664200633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221400214.

The product of its (nonzero) digits is 15552, while the sum is 30.

The square root of 664200633 is about 25772.0901946272. The cubic root of 664200633 is about 872.5019944509.

The spelling of 664200633 in words is "six hundred sixty-four million, two hundred thousand, six hundred thirty-three".