14643857 has 2 divisors, whose sum is σ = 14643858. Its totient is φ = 14643856.

The previous prime is 14643841. The next prime is 14643887. The reversal of 14643857 is 75834641.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9186961 + 5456896 = 3031^2 + 2336^2 .

It is a cyclic number.

It is not a de Polignac number, because 14643857 - 2⁴ = 14643841 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 14643857.

It is not a weakly prime, because it can be changed into another prime (14643887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7321928 + 7321929.

It is an arithmetic number, because the mean of its divisors is an integer number (7321929).

Almost surely, 2^14643857 is an apocalyptic number.

It is an amenable number.

14643857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14643857 is an equidigital number, since it uses as much as digits as its factorization.

14643857 is an evil number, because the sum of its binary digits is even.

The product of its digits is 80640, while the sum is 38.

The square root of 14643857 is about 3826.7292822984. The cubic root of 14643857 is about 244.6537215526.

The spelling of 14643857 in words is "fourteen million, six hundred forty-three thousand, eight hundred fifty-seven".