344690643 has 24 divisors (see below), whose sum is σ = 521479168. Its totient is φ = 202158000.

The previous prime is 344690629. The next prime is 344690651. The reversal of 344690643 is 346096443.

It is a happy number.

It is not a de Polignac number, because 344690643 - 2⁶ = 344690579 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344690653) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4063 + ... + 26568.

Almost surely, 2^344690643 is an apocalyptic number.

344690643 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

344690643 is a deficient number, since it is larger than the sum of its proper divisors (176788525).

344690643 is a wasteful number, since it uses less digits than its factorization.

344690643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30687 (or 30676 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 39.

The square root of 344690643 is about 18565.8461428506. The cubic root of 344690643 is about 701.1482128310.

The spelling of 344690643 in words is "three hundred forty-four million, six hundred ninety thousand, six hundred forty-three".