344642644 has 12 divisors (see below), whose sum is σ = 603255744. Its totient is φ = 172283864.

The previous prime is 344642611. The next prime is 344642647. The reversal of 344642644 is 446246443.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344642647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27189 + ... + 37795.

It is an arithmetic number, because the mean of its divisors is an integer number (50271312).

Almost surely, 2^344642644 is an apocalyptic number.

It is an amenable number.

344642644 is a deficient number, since it is larger than the sum of its proper divisors (258613100).

344642644 is a wasteful number, since it uses less digits than its factorization.

344642644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18734 (or 18732 counting only the distinct ones).

The product of its digits is 221184, while the sum is 37.

The square root of 344642644 is about 18564.5534285099. The cubic root of 344642644 is about 701.1156657959.

The spelling of 344642644 in words is "three hundred forty-four million, six hundred forty-two thousand, six hundred forty-four".