214594981 has 2 divisors, whose sum is σ = 214594982. Its totient is φ = 214594980.

The previous prime is 214594969. The next prime is 214594999. The reversal of 214594981 is 189495412.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162970756 + 51624225 = 12766^2 + 7185^2 .

It is a cyclic number.

It is not a de Polignac number, because 214594981 - 2¹⁹ = 214070693 is a prime.

It is a super-2 number, since 2×214594981² = 92102011740780722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214594901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107297490 + 107297491.

It is an arithmetic number, because the mean of its divisors is an integer number (107297491).

Almost surely, 2^214594981 is an apocalyptic number.

It is an amenable number.

214594981 is a deficient number, since it is larger than the sum of its proper divisors (1).

214594981 is an equidigital number, since it uses as much as digits as its factorization.

214594981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 43.

The square root of 214594981 is about 14649.0607548744. The cubic root of 214594981 is about 598.6962254869.

The spelling of 214594981 in words is "two hundred fourteen million, five hundred ninety-four thousand, nine hundred eighty-one".