215814 has 8 divisors (see below), whose sum is σ = 431640. Its totient is φ = 71936.

The previous prime is 215801. The next prime is 215827. The reversal of 215814 is 418512.

It is an interprime number because it is at equal distance from previous prime (215801) and next prime (215827).

It is a sphenic number, since it is the product of 3 distinct primes.

215814 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17979 + ... + 17990.

It is an arithmetic number, because the mean of its divisors is an integer number (53955).

2²¹⁵⁸¹⁴ is an apocalyptic number.

215814 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

215814 is a wasteful number, since it uses less digits than its factorization.

215814 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35974.

The product of its digits is 320, while the sum is 21.

The square root of 215814 is about 464.5578543088. The cubic root of 215814 is about 59.9827728320.

The spelling of 215814 in words is "two hundred fifteen thousand, eight hundred fourteen".