213826985 has 8 divisors (see below), whose sum is σ = 257264640. Its totient is φ = 170613424.

The previous prime is 213826957. The next prime is 213827011. The reversal of 213826985 is 589628312.

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-213826985 is a prime.

It is a Curzon 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, 53915 + ... + 57744.

It is an arithmetic number, because the mean of its divisors is an integer number (32158080).

Almost surely, 2^213826985 is an apocalyptic number.

It is an amenable number.

213826985 is a deficient number, since it is larger than the sum of its proper divisors (43437655).

213826985 is a wasteful number, since it uses less digits than its factorization.

213826985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 112047.

The product of its digits is 207360, while the sum is 44.

The square root of 213826985 is about 14622.8241116414. The cubic root of 213826985 is about 597.9811638605.

The spelling of 213826985 in words is "two hundred thirteen million, eight hundred twenty-six thousand, nine hundred eighty-five".