214857857 has 8 divisors (see below), whose sum is σ = 219890880. Its totient is φ = 209880720.

The previous prime is 214857803. The next prime is 214857859. The reversal of 214857857 is 758758412.

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 214857857 - 2⁶ = 214857793 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (214857859) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6143 + ... + 21620.

It is an arithmetic number, because the mean of its divisors is an integer number (27486360).

Almost surely, 2^214857857 is an apocalyptic number.

It is an amenable number.

214857857 is a deficient number, since it is larger than the sum of its proper divisors (5033023).

214857857 is a wasteful number, since it uses less digits than its factorization.

214857857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27943.

The product of its digits is 627200, while the sum is 47.

The square root of 214857857 is about 14658.0304611500. The cubic root of 214857857 is about 598.9405907060.

The spelling of 214857857 in words is "two hundred fourteen million, eight hundred fifty-seven thousand, eight hundred fifty-seven".