2186985 has 8 divisors (see below), whose sum is σ = 3499200. Its totient is φ = 1166384.

The previous prime is 2186969. The next prime is 2186993. The reversal of 2186985 is 5896812.

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 2186985 - 2⁴ = 2186969 is a prime.

It is an Ulam number.

2186985 is a lucky 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, 72885 + ... + 72914.

It is an arithmetic number, because the mean of its divisors is an integer number (437400).

2^2186985 is an apocalyptic number.

It is an amenable number.

2186985 is a deficient number, since it is larger than the sum of its proper divisors (1312215).

2186985 is a wasteful number, since it uses less digits than its factorization.

2186985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145807.

The product of its digits is 34560, while the sum is 39.

The square root of 2186985 is about 1478.8458337501. The cubic root of 2186985 is about 129.8021645678.

The spelling of 2186985 in words is "two million, one hundred eighty-six thousand, nine hundred eighty-five".