664162203 has 4 divisors (see below), whose sum is σ = 885549608. Its totient is φ = 442774800.

The previous prime is 664162181. The next prime is 664162313. The reversal of 664162203 is 302261466.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 664162203 - 2⁶ = 664162139 is a prime.

It is a super-2 number, since 2×664162203² = 882222863787626418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664162703) 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, 110693698 + ... + 110693703.

It is an arithmetic number, because the mean of its divisors is an integer number (221387402).

Almost surely, 2^664162203 is an apocalyptic number.

664162203 is a deficient number, since it is larger than the sum of its proper divisors (221387405).

664162203 is a wasteful number, since it uses less digits than its factorization.

664162203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221387404.

The product of its (nonzero) digits is 10368, while the sum is 30.

The square root of 664162203 is about 25771.3446098569. The cubic root of 664162203 is about 872.4851667552.

The spelling of 664162203 in words is "six hundred sixty-four million, one hundred sixty-two thousand, two hundred three".