2135807 has 4 divisors (see below), whose sum is σ = 2204736. Its totient is φ = 2066880.

The previous prime is 2135797. The next prime is 2135831. The reversal of 2135807 is 7085312.

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 2135807 - 2⁶ = 2135743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2135857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34418 + ... + 34479.

It is an arithmetic number, because the mean of its divisors is an integer number (551184).

2^2135807 is an apocalyptic number.

2135807 is a deficient number, since it is larger than the sum of its proper divisors (68929).

2135807 is an equidigital number, since it uses as much as digits as its factorization.

2135807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68928.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 2135807 is about 1461.4400432450. The cubic root of 2135807 is about 128.7816549557.

The spelling of 2135807 in words is "two million, one hundred thirty-five thousand, eight hundred seven".