340356697 has 2 divisors, whose sum is σ = 340356698. Its totient is φ = 340356696.

The previous prime is 340356661. The next prime is 340356701. The reversal of 340356697 is 796653043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 340181136 + 175561 = 18444^2 + 419^2 .

It is an emirp because it is prime and its reverse (796653043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340356697 - 2¹¹ = 340354649 is a prime.

It is not a weakly prime, because it can be changed into another prime (340356617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170178348 + 170178349.

It is an arithmetic number, because the mean of its divisors is an integer number (170178349).

Almost surely, 2^340356697 is an apocalyptic number.

It is an amenable number.

340356697 is a deficient number, since it is larger than the sum of its proper divisors (1).

340356697 is an equidigital number, since it uses as much as digits as its factorization.

340356697 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 43.

The square root of 340356697 is about 18448.7586845294. The cubic root of 340356697 is about 698.1971956749.

The spelling of 340356697 in words is "three hundred forty million, three hundred fifty-six thousand, six hundred ninety-seven".