340689719 has 2 divisors, whose sum is σ = 340689720. Its totient is φ = 340689718.

The previous prime is 340689691. The next prime is 340689733. The reversal of 340689719 is 917986043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340689719 - 2¹² = 340685623 is a prime.

It is a super-2 number, since 2×340689719² = 232138969264597922, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340689119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170344859 + 170344860.

It is an arithmetic number, because the mean of its divisors is an integer number (170344860).

Almost surely, 2^340689719 is an apocalyptic number.

340689719 is a deficient number, since it is larger than the sum of its proper divisors (1).

340689719 is an equidigital number, since it uses as much as digits as its factorization.

340689719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 47.

The square root of 340689719 is about 18457.7820715274. The cubic root of 340689719 is about 698.4248384537.

The spelling of 340689719 in words is "three hundred forty million, six hundred eighty-nine thousand, seven hundred nineteen".