2135687 has 2 divisors, whose sum is σ = 2135688. Its totient is φ = 2135686.

The previous prime is 2135669. The next prime is 2135689. The reversal of 2135687 is 7865312.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2135687 is a prime.

It is a super-2 number, since 2×2135687² = 9122317923938, which contains 22 as substring.

Together with 2135689, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2135689) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1067843 + 1067844.

It is an arithmetic number, because the mean of its divisors is an integer number (1067844).

2^2135687 is an apocalyptic number.

2135687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2135687 is an equidigital number, since it uses as much as digits as its factorization.

2135687 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10080, while the sum is 32.

The square root of 2135687 is about 1461.3989872721. The cubic root of 2135687 is about 128.7792430512.

The spelling of 2135687 in words is "two million, one hundred thirty-five thousand, six hundred eighty-seven".