345259657 has 2 divisors, whose sum is σ = 345259658. Its totient is φ = 345259656.

The previous prime is 345259637. The next prime is 345259669. The reversal of 345259657 is 756952543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 324684361 + 20575296 = 18019^2 + 4536^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345259657 is a prime.

It is not a weakly prime, because it can be changed into another prime (345259637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172629828 + 172629829.

It is an arithmetic number, because the mean of its divisors is an integer number (172629829).

Almost surely, 2^345259657 is an apocalyptic number.

It is an amenable number.

345259657 is a deficient number, since it is larger than the sum of its proper divisors (1).

345259657 is an equidigital number, since it uses as much as digits as its factorization.

345259657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1134000, while the sum is 46.

The square root of 345259657 is about 18581.1640378099. The cubic root of 345259657 is about 701.5338183227.

The spelling of 345259657 in words is "three hundred forty-five million, two hundred fifty-nine thousand, six hundred fifty-seven".