340645897 has 2 divisors, whose sum is σ = 340645898. Its totient is φ = 340645896.

The previous prime is 340645853. The next prime is 340645901. The reversal of 340645897 is 798546043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 269091216 + 71554681 = 16404^2 + 8459^2 .

It is a cyclic number.

It is not a de Polignac number, because 340645897 - 2⁷ = 340645769 is a prime.

It is not a weakly prime, because it can be changed into another prime (340645807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170322948 + 170322949.

It is an arithmetic number, because the mean of its divisors is an integer number (170322949).

Almost surely, 2^340645897 is an apocalyptic number.

It is an amenable number.

340645897 is a deficient number, since it is larger than the sum of its proper divisors (1).

340645897 is an equidigital number, since it uses as much as digits as its factorization.

340645897 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 340645897 is about 18456.5949459807. The cubic root of 340645897 is about 698.3948916684.

The spelling of 340645897 in words is "three hundred forty million, six hundred forty-five thousand, eight hundred ninety-seven".