222672665 has 4 divisors (see below), whose sum is σ = 267207204. Its totient is φ = 178138128.

The previous prime is 222672661. The next prime is 222672689. The reversal of 222672665 is 566276222.

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

It can be written as a sum of positive squares in 2 ways, for example, as 71284249 + 151388416 = 8443^2 + 12304^2 .

It is a cyclic number.

It is not a de Polignac number, because 222672665 - 2² = 222672661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (222672661) 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, 22267262 + ... + 22267271.

It is an arithmetic number, because the mean of its divisors is an integer number (66801801).

Almost surely, 2^222672665 is an apocalyptic number.

It is an amenable number.

222672665 is a deficient number, since it is larger than the sum of its proper divisors (44534539).

222672665 is an equidigital number, since it uses as much as digits as its factorization.

222672665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44534538.

The product of its digits is 120960, while the sum is 38.

The square root of 222672665 is about 14922.2205117067. The cubic root of 222672665 is about 606.1158424935.

The spelling of 222672665 in words is "two hundred twenty-two million, six hundred seventy-two thousand, six hundred sixty-five".