345289697 has 2 divisors, whose sum is σ = 345289698. Its totient is φ = 345289696.

The previous prime is 345289691. The next prime is 345289727. The reversal of 345289697 is 796982543.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 235438336 + 109851361 = 15344^2 + 10481^2 .

It is a cyclic number.

It is not a de Polignac number, because 345289697 - 2¹² = 345285601 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (345289691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172644848 + 172644849.

It is an arithmetic number, because the mean of its divisors is an integer number (172644849).

Almost surely, 2^345289697 is an apocalyptic number.

It is an amenable number.

345289697 is a deficient number, since it is larger than the sum of its proper divisors (1).

345289697 is an equidigital number, since it uses as much as digits as its factorization.

345289697 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3265920, while the sum is 53.

The square root of 345289697 is about 18581.9723657097. The cubic root of 345289697 is about 701.5541638456.

The spelling of 345289697 in words is "three hundred forty-five million, two hundred eighty-nine thousand, six hundred ninety-seven".