344505664 has 28 divisors (see below), whose sum is σ = 685699924. Its totient is φ = 171730944.

The previous prime is 344505659. The next prime is 344505677. The reversal of 344505664 is 466505443.

It can be written as a sum of positive squares in 2 ways, for example, as 175297600 + 169208064 = 13240^2 + 13008^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13582 + ... + 29554.

It is an arithmetic number, because the mean of its divisors is an integer number (24489283).

Almost surely, 2^344505664 is an apocalyptic number.

It is an amenable number.

344505664 is a deficient number, since it is larger than the sum of its proper divisors (341194260).

344505664 is a wasteful number, since it uses less digits than its factorization.

344505664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16322 (or 16312 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 37.

The square root of 344505664 is about 18560.8637730037. The cubic root of 344505664 is about 701.0227661387.

The spelling of 344505664 in words is "three hundred forty-four million, five hundred five thousand, six hundred sixty-four".