1337689 has 2 divisors, whose sum is σ = 1337690. Its totient is φ = 1337688.

The previous prime is 1337671. The next prime is 1337701. The reversal of 1337689 is 9867331.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1247689 + 90000 = 1117^2 + 300^2 .

It is a cyclic number.

It is not a de Polignac number, because 1337689 - 2¹¹ = 1335641 is a prime.

1337689 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (1337629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 668844 + 668845.

It is an arithmetic number, because the mean of its divisors is an integer number (668845).

2^1337689 is an apocalyptic number.

It is an amenable number.

1337689 is a deficient number, since it is larger than the sum of its proper divisors (1).

1337689 is an equidigital number, since it uses as much as digits as its factorization.

1337689 is an evil number, because the sum of its binary digits is even.

The product of its digits is 27216, while the sum is 37.

The square root of 1337689 is about 1156.5850595611. The cubic root of 1337689 is about 110.1839621458.

The spelling of 1337689 in words is "one million, three hundred thirty-seven thousand, six hundred eighty-nine".