2135987 has 8 divisors (see below), whose sum is σ = 2547456. Its totient is φ = 1751112.

The previous prime is 2135971. The next prime is 2136011. The reversal of 2135987 is 7895312.

2135987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2135987 - 2⁴ = 2135971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2135957) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6473 + ... + 6794.

It is an arithmetic number, because the mean of its divisors is an integer number (318432).

2^2135987 is an apocalyptic number.

2135987 is a deficient number, since it is larger than the sum of its proper divisors (411469).

2135987 is a wasteful number, since it uses less digits than its factorization.

2135987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13297.

The product of its digits is 15120, while the sum is 35.

The square root of 2135987 is about 1461.5016250419. The cubic root of 2135987 is about 128.7852726432.

The spelling of 2135987 in words is "two million, one hundred thirty-five thousand, nine hundred eighty-seven".