14687857 has 2 divisors, whose sum is σ = 14687858. Its totient is φ = 14687856.

The previous prime is 14687843. The next prime is 14687861. The reversal of 14687857 is 75878641.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11451456 + 3236401 = 3384^2 + 1799^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-14687857 is a prime.

It is not a weakly prime, because it can be changed into another prime (14687867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7343928 + 7343929.

It is an arithmetic number, because the mean of its divisors is an integer number (7343929).

Almost surely, 2^14687857 is an apocalyptic number.

It is an amenable number.

14687857 is a deficient number, since it is larger than the sum of its proper divisors (1).

14687857 is an equidigital number, since it uses as much as digits as its factorization.

14687857 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 376320, while the sum is 46.

The square root of 14687857 is about 3832.4740051304. The cubic root of 14687857 is about 244.8985113457.

The spelling of 14687857 in words is "fourteen million, six hundred eighty-seven thousand, eight hundred fifty-seven".