344645664 has 48 divisors (see below), whose sum is σ = 986942880. Its totient is φ = 104437760.

The previous prime is 344645621. The next prime is 344645677. The reversal of 344645664 is 466546443.

It is a tau number, because it is divible by the number of its divisors (48).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162129 + ... + 164240.

It is an arithmetic number, because the mean of its divisors is an integer number (20561310).

Almost surely, 2^344645664 is an apocalyptic number.

It is an amenable number.

344645664 is an abundant number, since it is smaller than the sum of its proper divisors (642297216).

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

344645664 is a wasteful number, since it uses less digits than its factorization.

344645664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326393 (or 326385 counting only the distinct ones).

The product of its digits is 829440, while the sum is 42.

The square root of 344645664 is about 18564.6347661353. The cubic root of 344645664 is about 701.1177136786.

The spelling of 344645664 in words is "three hundred forty-four million, six hundred forty-five thousand, six hundred sixty-four".