340217807 has 2 divisors, whose sum is σ = 340217808. Its totient is φ = 340217806.

The previous prime is 340217797. The next prime is 340217861. The reversal of 340217807 is 708712043.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340217807 - 2⁴ = 340217791 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340217407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170108903 + 170108904.

It is an arithmetic number, because the mean of its divisors is an integer number (170108904).

Almost surely, 2^340217807 is an apocalyptic number.

340217807 is a deficient number, since it is larger than the sum of its proper divisors (1).

340217807 is an equidigital number, since it uses as much as digits as its factorization.

340217807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 32.

The square root of 340217807 is about 18444.9940905385. The cubic root of 340217807 is about 698.1022112042.

The spelling of 340217807 in words is "three hundred forty million, two hundred seventeen thousand, eight hundred seven".