635164223 has 8 divisors (see below), whose sum is σ = 657769728. Its totient is φ = 612914904.

The previous prime is 635164207. The next prime is 635164261. The reversal of 635164223 is 322461536.

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 635164223 - 2⁴ = 635164207 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 635164223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (635164423) 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, 85415 + ... + 92552.

It is an arithmetic number, because the mean of its divisors is an integer number (82221216).

Almost surely, 2^635164223 is an apocalyptic number.

635164223 is a deficient number, since it is larger than the sum of its proper divisors (22605505).

635164223 is a wasteful number, since it uses less digits than its factorization.

635164223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178093.

The product of its digits is 25920, while the sum is 32.

The square root of 635164223 is about 25202.4646215405. The cubic root of 635164223 is about 859.5978934134.

The spelling of 635164223 in words is "six hundred thirty-five million, one hundred sixty-four thousand, two hundred twenty-three".