340000637 has 2 divisors, whose sum is σ = 340000638. Its totient is φ = 340000636.

The previous prime is 340000627. The next prime is 340000673. The reversal of 340000637 is 736000043.

Together with next prime (340000673) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 327284281 + 12716356 = 18091^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 340000637 - 2⁴ = 340000621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340000607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170000318 + 170000319.

It is an arithmetic number, because the mean of its divisors is an integer number (170000319).

Almost surely, 2^340000637 is an apocalyptic number.

It is an amenable number.

340000637 is a deficient number, since it is larger than the sum of its proper divisors (1).

340000637 is an equidigital number, since it uses as much as digits as its factorization.

340000637 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 23.

The square root of 340000637 is about 18439.1061876654. The cubic root of 340000637 is about 697.9536405692.

It can be divided in two parts, 3400006 and 37, that added together give a palindrome (3400043).

The spelling of 340000637 in words is "three hundred forty million, six hundred thirty-seven", and thus it is an aban number.