345945629 has 2 divisors, whose sum is σ = 345945630. Its totient is φ = 345945628.

The previous prime is 345945557. The next prime is 345945641. The reversal of 345945629 is 926549543.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 345885604 + 60025 = 18598^2 + 245^2 .

It is an emirp because it is prime and its reverse (926549543) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 345945629 - 2²⁰ = 344897053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345945679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172972814 + 172972815.

It is an arithmetic number, because the mean of its divisors is an integer number (172972815).

Almost surely, 2^345945629 is an apocalyptic number.

It is an amenable number.

345945629 is a deficient number, since it is larger than the sum of its proper divisors (1).

345945629 is an equidigital number, since it uses as much as digits as its factorization.

345945629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1166400, while the sum is 47.

The square root of 345945629 is about 18599.6136787838. The cubic root of 345945629 is about 701.9981202754.

The spelling of 345945629 in words is "three hundred forty-five million, nine hundred forty-five thousand, six hundred twenty-nine".