344622621 has 12 divisors (see below), whose sum is σ = 525268896. Its totient is φ = 196878600.

The previous prime is 344622613. The next prime is 344622673. The reversal of 344622621 is 126226443.

It is not a de Polignac number, because 344622621 - 2³ = 344622613 is a prime.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344622121) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 83046 + ... + 87096.

It is an arithmetic number, because the mean of its divisors is an integer number (43772408).

Almost surely, 2^344622621 is an apocalyptic number.

It is an amenable number.

344622621 is a deficient number, since it is larger than the sum of its proper divisors (180646275).

344622621 is an frugal number, since it uses more digits than its factorization.

344622621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8112 (or 4061 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The square root of 344622621 is about 18564.0141402661. The cubic root of 344622621 is about 701.1020877597.

The spelling of 344622621 in words is "three hundred forty-four million, six hundred twenty-two thousand, six hundred twenty-one".