344661564 has 48 divisors (see below), whose sum is σ = 875039648. Its totient is φ = 104951808.

The previous prime is 344661533. The next prime is 344661593. The reversal of 344661564 is 465166443.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3744 + ... + 26520.

Almost surely, 2^344661564 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 344661564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (437519824).

344661564 is an abundant number, since it is smaller than the sum of its proper divisors (530378084).

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

344661564 is a wasteful number, since it uses less digits than its factorization.

344661564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22894 (or 22892 counting only the distinct ones).

The product of its digits is 207360, while the sum is 39.

The square root of 344661564 is about 18565.0629947760. The cubic root of 344661564 is about 701.1284953803.

The spelling of 344661564 in words is "three hundred forty-four million, six hundred sixty-one thousand, five hundred sixty-four".