344001645 has 24 divisors (see below), whose sum is σ = 642137496. Its totient is φ = 169354368.

The previous prime is 344001611. The next prime is 344001649. The reversal of 344001645 is 546100443.

It can be written as a sum of positive squares in 4 ways, for example, as 6140484 + 337861161 = 2478^2 + 18381^2 .

It is not a de Polignac number, because 344001645 - 2¹¹ = 343999597 is a prime.

It is a super-3 number, since 3×344001645³ (a number of 27 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (344001649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 293434 + ... + 294603.

It is an arithmetic number, because the mean of its divisors is an integer number (26755729).

Almost surely, 2^344001645 is an apocalyptic number.

It is an amenable number.

344001645 is a deficient number, since it is larger than the sum of its proper divisors (298135851).

344001645 is a wasteful number, since it uses less digits than its factorization.

344001645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 588061 (or 588058 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 344001645 is about 18547.2813371664. The cubic root of 344001645 is about 700.6807289534.

The spelling of 344001645 in words is "three hundred forty-four million, one thousand, six hundred forty-five".