340766687 has 2 divisors, whose sum is σ = 340766688. Its totient is φ = 340766686.

The previous prime is 340766677. The next prime is 340766719. The reversal of 340766687 is 786667043.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 340766687 - 2²⁰ = 339718111 is a prime.

It is a super-2 number, since 2×340766687² = 232243869937911938, 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 (340766677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170383343 + 170383344.

It is an arithmetic number, because the mean of its divisors is an integer number (170383344).

Almost surely, 2^340766687 is an apocalyptic number.

340766687 is a deficient number, since it is larger than the sum of its proper divisors (1).

340766687 is an equidigital number, since it uses as much as digits as its factorization.

340766687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 47.

The square root of 340766687 is about 18459.8669280144. The cubic root of 340766687 is about 698.4774301154.

The spelling of 340766687 in words is "three hundred forty million, seven hundred sixty-six thousand, six hundred eighty-seven".