214744661 has 2 divisors, whose sum is σ = 214744662. Its totient is φ = 214744660.

The previous prime is 214744627. The next prime is 214744687. The reversal of 214744661 is 166447412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 168844036 + 45900625 = 12994^2 + 6775^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-214744661 is a prime.

It is a super-2 number, since 2×214744661² = 92230538856009842, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (214744961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107372330 + 107372331.

It is an arithmetic number, because the mean of its divisors is an integer number (107372331).

Almost surely, 2^214744661 is an apocalyptic number.

It is an amenable number.

214744661 is a deficient number, since it is larger than the sum of its proper divisors (1).

214744661 is an equidigital number, since it uses as much as digits as its factorization.

214744661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32256, while the sum is 35.

The square root of 214744661 is about 14654.1687242914. The cubic root of 214744661 is about 598.8353900093.

The spelling of 214744661 in words is "two hundred fourteen million, seven hundred forty-four thousand, six hundred sixty-one".