345517693 has 2 divisors, whose sum is σ = 345517694. Its totient is φ = 345517692.

The previous prime is 345517691. The next prime is 345517751. The reversal of 345517693 is 396715543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339554329 + 5963364 = 18427^2 + 2442^2 .

It is a cyclic number.

It is not a de Polignac number, because 345517693 - 2¹ = 345517691 is a prime.

Together with 345517691, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345517691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172758846 + 172758847.

It is an arithmetic number, because the mean of its divisors is an integer number (172758847).

Almost surely, 2^345517693 is an apocalyptic number.

It is an amenable number.

345517693 is a deficient number, since it is larger than the sum of its proper divisors (1).

345517693 is an equidigital number, since it uses as much as digits as its factorization.

345517693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 340200, while the sum is 43.

The square root of 345517693 is about 18588.1062241424. The cubic root of 345517693 is about 701.7085427646.

The spelling of 345517693 in words is "three hundred forty-five million, five hundred seventeen thousand, six hundred ninety-three".