344920645 has 8 divisors (see below), whose sum is σ = 415867680. Its totient is φ = 274627920.

The previous prime is 344920643. The next prime is 344920703. The reversal of 344920645 is 546029443.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 344920645 - 2¹ = 344920643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344920643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 162415 + ... + 164524.

It is an arithmetic number, because the mean of its divisors is an integer number (51983460).

Almost surely, 2^344920645 is an apocalyptic number.

It is an amenable number.

344920645 is a deficient number, since it is larger than the sum of its proper divisors (70947035).

344920645 is a wasteful number, since it uses less digits than its factorization.

344920645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327155.

The product of its (nonzero) digits is 103680, while the sum is 37.

The square root of 344920645 is about 18572.0393333635. The cubic root of 344920645 is about 701.3041300653.

It can be divided in two parts, 3449206 and 45, that added together give a triangular number (3449251 = T₂₆₂₆).

The spelling of 344920645 in words is "three hundred forty-four million, nine hundred twenty thousand, six hundred forty-five".