214981 has 8 divisors (see below), whose sum is σ = 241920. Its totient is φ = 189552.

The previous prime is 214967. The next prime is 214987. The reversal of 214981 is 189412.

It is a happy number.

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 214981 - 2⁷ = 214853 is a prime.

It is a super-2 number, since 2×214981² = 92433660722, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (214987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61 + ... + 658.

It is an arithmetic number, because the mean of its divisors is an integer number (30240).

2²¹⁴⁹⁸¹ is an apocalyptic number.

It is an amenable number.

214981 is a deficient number, since it is larger than the sum of its proper divisors (26939).

214981 is a wasteful number, since it uses less digits than its factorization.

214981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 755.

The product of its digits is 576, while the sum is 25.

The square root of 214981 is about 463.6604360952. The cubic root of 214981 is about 59.9054993869.

The spelling of 214981 in words is "two hundred fourteen thousand, nine hundred eighty-one".