2135787 has 4 divisors (see below), whose sum is σ = 2847720. Its totient is φ = 1423856.

The previous prime is 2135779. The next prime is 2135797. The reversal of 2135787 is 7875312.

2135787 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2135787 - 2³ = 2135779 is a prime.

It is a super-2 number, since 2×2135787² = 9123172218738, which contains 22 as substring.

It is a d-powerful number, because it can be written as 2¹⁸ + 1 + 3¹³ + 5² + 7³ + 8⁶ + 7⁵ .

It is a D-number.

It is not an unprimeable number, because it can be changed into a prime (2135717) 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 3 ways as a sum of consecutive naturals, for example, 355962 + ... + 355967.

It is an arithmetic number, because the mean of its divisors is an integer number (711930).

2^2135787 is an apocalyptic number.

2135787 is a deficient number, since it is larger than the sum of its proper divisors (711933).

2135787 is an equidigital number, since it uses as much as digits as its factorization.

2135787 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 711932.

The product of its digits is 11760, while the sum is 33.

The square root of 2135787 is about 1461.4332006630. The cubic root of 2135787 is about 128.7812529779.

The spelling of 2135787 in words is "two million, one hundred thirty-five thousand, seven hundred eighty-seven".