340330637 has 2 divisors, whose sum is σ = 340330638. Its totient is φ = 340330636.

The previous prime is 340330607. The next prime is 340330673. The reversal of 340330637 is 736033043.

Together with next prime (340330673) 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., 252364996 + 87965641 = 15886^2 + 9379^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340330637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340330607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170165318 + 170165319.

It is an arithmetic number, because the mean of its divisors is an integer number (170165319).

Almost surely, 2^340330637 is an apocalyptic number.

It is an amenable number.

340330637 is a deficient number, since it is larger than the sum of its proper divisors (1).

340330637 is an equidigital number, since it uses as much as digits as its factorization.

340330637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 29.

The square root of 340330637 is about 18448.0523904286. The cubic root of 340330637 is about 698.1793756609.

The spelling of 340330637 in words is "three hundred forty million, three hundred thirty thousand, six hundred thirty-seven".