7214861 has 2 divisors, whose sum is σ = 7214862. Its totient is φ = 7214860.

The previous prime is 7214843. The next prime is 7214863. The reversal of 7214861 is 1684127.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6604900 + 609961 = 2570^2 + 781^2 .

It is an emirp because it is prime and its reverse (1684127) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7214861 - 2¹⁸ = 6952717 is a prime.

Together with 7214863, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7214863) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3607430 + 3607431.

It is an arithmetic number, because the mean of its divisors is an integer number (3607431).

Almost surely, 2^7214861 is an apocalyptic number.

It is an amenable number.

7214861 is a deficient number, since it is larger than the sum of its proper divisors (1).

7214861 is an equidigital number, since it uses as much as digits as its factorization.

7214861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2688, while the sum is 29.

The square root of 7214861 is about 2686.0493294055. The cubic root of 7214861 is about 193.2306387489.

Adding to 7214861 its reverse (1684127), we get a palindrome (8898988).

The spelling of 7214861 in words is "seven million, two hundred fourteen thousand, eight hundred sixty-one".