654664223 has 4 divisors (see below), whose sum is σ = 654865848. Its totient is φ = 654462600.

The previous prime is 654664217. The next prime is 654664253. The reversal of 654664223 is 322466456.

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

It is a cyclic number.

It is not a de Polignac number, because 654664223 - 2⁶ = 654664159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (654664253) 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, 95861 + ... + 102462.

It is an arithmetic number, because the mean of its divisors is an integer number (163716462).

Almost surely, 2^654664223 is an apocalyptic number.

654664223 is a deficient number, since it is larger than the sum of its proper divisors (201625).

654664223 is a wasteful number, since it uses less digits than its factorization.

654664223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201624.

The product of its digits is 207360, while the sum is 38.

The square root of 654664223 is about 25586.4069966848. The cubic root of 654664223 is about 868.3061343630.

The spelling of 654664223 in words is "six hundred fifty-four million, six hundred sixty-four thousand, two hundred twenty-three".