344665666 has 16 divisors (see below), whose sum is σ = 525935808. Its totient is φ = 169369200.

The previous prime is 344665661. The next prime is 344665679. The reversal of 344665666 is 666566443.

It is a super-4 number, since 4×344665666⁴ (a number of 35 digits) contains 4444 as substring.

It is not an unprimeable number, because it can be changed into a prime (344665661) 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, 43336 + ... + 50668.

It is an arithmetic number, because the mean of its divisors is an integer number (32870988).

Almost surely, 2^344665666 is an apocalyptic number.

344665666 is a deficient number, since it is larger than the sum of its proper divisors (181270142).

344665666 is a wasteful number, since it uses less digits than its factorization.

344665666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7737.

The product of its digits is 1866240, while the sum is 46.

The square root of 344665666 is about 18565.1734707759. The cubic root of 344665666 is about 701.1312768699.

The spelling of 344665666 in words is "three hundred forty-four million, six hundred sixty-five thousand, six hundred sixty-six".