340677791 has 2 divisors, whose sum is σ = 340677792. Its totient is φ = 340677790.

The previous prime is 340677749. The next prime is 340677793. The reversal of 340677791 is 197776043.

It is a strong prime.

It is an emirp because it is prime and its reverse (197776043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 340677791 - 2¹⁰ = 340676767 is a prime.

It is a super-2 number, since 2×340677791² = 232122714561279362, which contains 22 as substring.

Together with 340677793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340677793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170338895 + 170338896.

It is an arithmetic number, because the mean of its divisors is an integer number (170338896).

Almost surely, 2^340677791 is an apocalyptic number.

340677791 is a deficient number, since it is larger than the sum of its proper divisors (1).

340677791 is an equidigital number, since it uses as much as digits as its factorization.

340677791 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 222264, while the sum is 44.

The square root of 340677791 is about 18457.4589529545. The cubic root of 340677791 is about 698.4166874312.

The spelling of 340677791 in words is "three hundred forty million, six hundred seventy-seven thousand, seven hundred ninety-one".