344223666 has 12 divisors (see below), whose sum is σ = 745817982. Its totient is φ = 114741216.

The previous prime is 344223571. The next prime is 344223679. The reversal of 344223666 is 666322443.

It can be written as a sum of positive squares in only one way, i.e., 328660641 + 15563025 = 18129^2 + 3945^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 344223666.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9561751 + ... + 9561786.

Almost surely, 2^344223666 is an apocalyptic number.

344223666 is an abundant number, since it is smaller than the sum of its proper divisors (401594316).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

344223666 is a wasteful number, since it uses less digits than its factorization.

344223666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19123545 (or 19123542 counting only the distinct ones).

The product of its digits is 124416, while the sum is 36.

The square root of 344223666 is about 18553.2656424684. The cubic root of 344223666 is about 700.8314379036.

The spelling of 344223666 in words is "three hundred forty-four million, two hundred twenty-three thousand, six hundred sixty-six".