340863637 has 2 divisors, whose sum is σ = 340863638. Its totient is φ = 340863636.

The previous prime is 340863613. The next prime is 340863641. The reversal of 340863637 is 736368043.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 283619281 + 57244356 = 16841^2 + 7566^2 .

It is a cyclic number.

It is not a de Polignac number, because 340863637 - 2¹⁵ = 340830869 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340863637.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340863037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170431818 + 170431819.

It is an arithmetic number, because the mean of its divisors is an integer number (170431819).

Almost surely, 2^340863637 is an apocalyptic number.

It is an amenable number.

340863637 is a deficient number, since it is larger than the sum of its proper divisors (1).

340863637 is an equidigital number, since it uses as much as digits as its factorization.

340863637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 40.

The square root of 340863637 is about 18462.4927081908. The cubic root of 340863637 is about 698.5436640603.

The spelling of 340863637 in words is "three hundred forty million, eight hundred sixty-three thousand, six hundred thirty-seven".