344394666 has 96 divisors (see below), whose sum is σ = 964873728. Its totient is φ = 89443440.

The previous prime is 344394643. The next prime is 344394671. The reversal of 344394666 is 666493443.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 32821 + ... + 42023.

It is an arithmetic number, because the mean of its divisors is an integer number (10050768).

Almost surely, 2^344394666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344394666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (482436864).

344394666 is an abundant number, since it is smaller than the sum of its proper divisors (620479062).

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

344394666 is a wasteful number, since it uses less digits than its factorization.

344394666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9238 (or 9226 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The square root of 344394666 is about 18557.8734234287. The cubic root of 344394666 is about 700.9474693763.

The spelling of 344394666 in words is "three hundred forty-four million, three hundred ninety-four thousand, six hundred sixty-six".