340279637 has 2 divisors, whose sum is σ = 340279638. Its totient is φ = 340279636.

The previous prime is 340279631. The next prime is 340279669. The reversal of 340279637 is 736972043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 317944561 + 22335076 = 17831^2 + 4726^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-340279637 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 340279594 and 340279603.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340279631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170139818 + 170139819.

It is an arithmetic number, because the mean of its divisors is an integer number (170139819).

Almost surely, 2^340279637 is an apocalyptic number.

It is an amenable number.

340279637 is a deficient number, since it is larger than the sum of its proper divisors (1).

340279637 is an equidigital number, since it uses as much as digits as its factorization.

340279637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 190512, while the sum is 41.

The square root of 340279637 is about 18446.6700789058. The cubic root of 340279637 is about 698.1444988646.

The spelling of 340279637 in words is "three hundred forty million, two hundred seventy-nine thousand, six hundred thirty-seven".