247087 has 2 divisors, whose sum is σ = 247088. Its totient is φ = 247086.

The previous prime is 247073. The next prime is 247099. The reversal of 247087 is 780742.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 247087 - 2¹¹ = 245039 is a prime.

It is a super-2 number, since 2×247087² = 122103971138, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (247007) 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, 123543 + 123544.

It is an arithmetic number, because the mean of its divisors is an integer number (123544).

2²⁴⁷⁰⁸⁷ is an apocalyptic number.

247087 is a deficient number, since it is larger than the sum of its proper divisors (1).

247087 is an equidigital number, since it uses as much as digits as its factorization.

247087 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3136, while the sum is 28.

The square root of 247087 is about 497.0784646311. The cubic root of 247087 is about 62.7504193027.

Subtracting from 247087 its product of nonzero digits (3136), we obtain a triangular number (243951 = T₆₉₈).

It can be divided in two parts, 2 and 47087, that added together give a square (47089 = 217²).

The spelling of 247087 in words is "two hundred forty-seven thousand, eighty-seven".