345740653 has 2 divisors, whose sum is σ = 345740654. Its totient is φ = 345740652.

The previous prime is 345740621. The next prime is 345740671. The reversal of 345740653 is 356047543.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231100804 + 114639849 = 15202^2 + 10707^2 .

It is a cyclic number.

It is not a de Polignac number, because 345740653 - 2⁵ = 345740621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (345740693) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172870326 + 172870327.

It is an arithmetic number, because the mean of its divisors is an integer number (172870327).

Almost surely, 2^345740653 is an apocalyptic number.

It is an amenable number.

345740653 is a deficient number, since it is larger than the sum of its proper divisors (1).

345740653 is an equidigital number, since it uses as much as digits as its factorization.

345740653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 151200, while the sum is 37.

The square root of 345740653 is about 18594.1026403535. The cubic root of 345740653 is about 701.8594460799.

The spelling of 345740653 in words is "three hundred forty-five million, seven hundred forty thousand, six hundred fifty-three".