214830661 has 2 divisors, whose sum is σ = 214830662. Its totient is φ = 214830660.

The previous prime is 214830619. The next prime is 214830689. The reversal of 214830661 is 166038412.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 205033761 + 9796900 = 14319^2 + 3130^2 .

It is a cyclic number.

It is not a de Polignac number, because 214830661 - 2¹³ = 214822469 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214830601) 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 as a sum of consecutive naturals, namely, 107415330 + 107415331.

It is an arithmetic number, because the mean of its divisors is an integer number (107415331).

Almost surely, 2^214830661 is an apocalyptic number.

It is an amenable number.

214830661 is a deficient number, since it is larger than the sum of its proper divisors (1).

214830661 is an equidigital number, since it uses as much as digits as its factorization.

214830661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 214830661 is about 14657.1027491793. The cubic root of 214830661 is about 598.9153189972.

The spelling of 214830661 in words is "two hundred fourteen million, eight hundred thirty thousand, six hundred sixty-one".