2187085 has 8 divisors (see below), whose sum is σ = 2649240. Its totient is φ = 1733184.

The previous prime is 2187077. The next prime is 2187103. The reversal of 2187085 is 5807812.

2187085 = T₁₂₀₆ + T₁₂₀₇ + T₁₂₀₈.

It can be written as a sum of positive squares in 4 ways, for example, as 715716 + 1471369 = 846^2 + 1213^2 .

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 2187085 - 2³ = 2187077 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1462 + ... + 2551.

It is an arithmetic number, because the mean of its divisors is an integer number (331155).

2^2187085 is an apocalyptic number.

2187085 is the 1208-th centered triangular number.

It is an amenable number.

2187085 is a deficient number, since it is larger than the sum of its proper divisors (462155).

2187085 is a wasteful number, since it uses less digits than its factorization.

2187085 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4127.

The product of its (nonzero) digits is 4480, while the sum is 31.

The square root of 2187085 is about 1478.8796435140. The cubic root of 2187085 is about 129.8041429412.

The spelling of 2187085 in words is "two million, one hundred eighty-seven thousand, eighty-five".