345645844 has 12 divisors (see below), whose sum is σ = 605010868. Its totient is φ = 172785600.

The previous prime is 345645841. The next prime is 345645851. The reversal of 345645844 is 448546543.

It can be written as a sum of positive squares in 2 ways, for example, as 111555844 + 234090000 = 10562^2 + 15300^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 345645844.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (345645841) 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 3 ways as a sum of consecutive naturals, for example, 29014 + ... + 39154.

Almost surely, 2^345645844 is an apocalyptic number.

It is an amenable number.

345645844 is a deficient number, since it is larger than the sum of its proper divisors (259365024).

345645844 is a wasteful number, since it uses less digits than its factorization.

345645844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18666 (or 18664 counting only the distinct ones).

The product of its digits is 921600, while the sum is 43.

The square root of 345645844 is about 18591.5530281900. The cubic root of 345645844 is about 701.7952855837.

The spelling of 345645844 in words is "three hundred forty-five million, six hundred forty-five thousand, eight hundred forty-four".