344945664 has 132 divisors (see below), whose sum is σ = 1138525024. Its totient is φ = 98537472.

The previous prime is 344945647. The next prime is 344945687. The reversal of 344945664 is 466549443.

It is a super-2 number, since 2×344945664² = 237975022224801792, which contains 22 as substring.

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 11 ways as a sum of consecutive naturals, for example, 61839 + ... + 67185.

Almost surely, 2^344945664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 344945664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (569262512).

344945664 is an abundant number, since it is smaller than the sum of its proper divisors (793579360).

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

344945664 is a wasteful number, since it uses less digits than its factorization.

344945664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5380 (or 5359 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 45.

The square root of 344945664 is about 18572.7128874594. The cubic root of 344945664 is about 701.3210861431.

The spelling of 344945664 in words is "three hundred forty-four million, nine hundred forty-five thousand, six hundred sixty-four".