214893643 has 4 divisors (see below), whose sum is σ = 221825728. Its totient is φ = 207961560.

The previous prime is 214893571. The next prime is 214893647. The reversal of 214893643 is 346398412.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214893643 is a prime.

It is a super-2 number, since 2×214893643² = 92358555603622898, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 214893596 and 214893605.

It is not an unprimeable number, because it can be changed into a prime (214893647) 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 3 ways as a sum of consecutive naturals, for example, 3465996 + ... + 3466057.

It is an arithmetic number, because the mean of its divisors is an integer number (55456432).

Almost surely, 2^214893643 is an apocalyptic number.

214893643 is a deficient number, since it is larger than the sum of its proper divisors (6932085).

214893643 is an equidigital number, since it uses as much as digits as its factorization.

214893643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6932084.

The product of its digits is 124416, while the sum is 40.

The square root of 214893643 is about 14659.2511063833. The cubic root of 214893643 is about 598.9738413683.

The spelling of 214893643 in words is "two hundred fourteen million, eight hundred ninety-three thousand, six hundred forty-three".