340687877 has 2 divisors, whose sum is σ = 340687878. Its totient is φ = 340687876.

The previous prime is 340687873. The next prime is 340687909. The reversal of 340687877 is 778786043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 325116961 + 15570916 = 18031^2 + 3946^2 .

It is a cyclic number.

It is not a de Polignac number, because 340687877 - 2² = 340687873 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340687873) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170343938 + 170343939.

It is an arithmetic number, because the mean of its divisors is an integer number (170343939).

Almost surely, 2^340687877 is an apocalyptic number.

It is an amenable number.

340687877 is a deficient number, since it is larger than the sum of its proper divisors (1).

340687877 is an equidigital number, since it uses as much as digits as its factorization.

340687877 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1580544, while the sum is 50.

The square root of 340687877 is about 18457.7321738073. The cubic root of 340687877 is about 698.4235797318.

The spelling of 340687877 in words is "three hundred forty million, six hundred eighty-seven thousand, eight hundred seventy-seven".