2170087 has 8 divisors (see below), whose sum is σ = 2257200. Its totient is φ = 2084544.

The previous prime is 2170061. The next prime is 2170109. The reversal of 2170087 is 7800712.

It is a happy number.

2170087 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 a de Polignac number, because none of the positive numbers 2^k-2170087 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 (2170387) 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, 2964 + ... + 3622.

It is an arithmetic number, because the mean of its divisors is an integer number (282150).

2^2170087 is an apocalyptic number.

2170087 is a deficient number, since it is larger than the sum of its proper divisors (87113).

2170087 is an equidigital number, since it uses as much as digits as its factorization.

2170087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 2170087 is about 1473.1215156938. The cubic root of 2170087 is about 129.4669891958.

Adding to 2170087 its reverse (7800712), we get a palindrome (9970799).

The spelling of 2170087 in words is "two million, one hundred seventy thousand, eighty-seven".