344945561 has 6 divisors (see below), whose sum is σ = 354521790. Its totient is φ = 335621376.

The previous prime is 344945537. The next prime is 344945563. The reversal of 344945561 is 165549443.

It can be written as a sum of positive squares in 3 ways, for example, as 179051161 + 165894400 = 13381^2 + 12880^2 .

It is not a de Polignac number, because 344945561 - 2¹⁴ = 344929177 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (344945563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 124616 + ... + 127353.

It is an arithmetic number, because the mean of its divisors is an integer number (59086965).

Almost surely, 2^344945561 is an apocalyptic number.

It is an amenable number.

344945561 is a deficient number, since it is larger than the sum of its proper divisors (9576229).

344945561 is an equidigital number, since it uses as much as digits as its factorization.

344945561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 252043 (or 252006 counting only the distinct ones).

The product of its digits is 259200, while the sum is 41.

The square root of 344945561 is about 18572.7101145740. The cubic root of 344945561 is about 701.3210163388.

The spelling of 344945561 in words is "three hundred forty-four million, nine hundred forty-five thousand, five hundred sixty-one".