345648629 has 2 divisors, whose sum is σ = 345648630. Its totient is φ = 345648628.

The previous prime is 345648571. The next prime is 345648643. The reversal of 345648629 is 926846543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 292752100 + 52896529 = 17110^2 + 7273^2 .

It is a cyclic number.

It is not a de Polignac number, because 345648629 - 2²⁸ = 77213173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345648679) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172824314 + 172824315.

It is an arithmetic number, because the mean of its divisors is an integer number (172824315).

Almost surely, 2^345648629 is an apocalyptic number.

It is an amenable number.

345648629 is a deficient number, since it is larger than the sum of its proper divisors (1).

345648629 is an equidigital number, since it uses as much as digits as its factorization.

345648629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 47.

The square root of 345648629 is about 18591.6279276453. The cubic root of 345648629 is about 701.7971704558.

The spelling of 345648629 in words is "three hundred forty-five million, six hundred forty-eight thousand, six hundred twenty-nine".