87683647 has 2 divisors, whose sum is σ = 87683648. Its totient is φ = 87683646.

The previous prime is 87683627. The next prime is 87683719. The reversal of 87683647 is 74638678.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87683647 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 87683647.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87683627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43841823 + 43841824.

It is an arithmetic number, because the mean of its divisors is an integer number (43841824).

Almost surely, 2^87683647 is an apocalyptic number.

87683647 is a deficient number, since it is larger than the sum of its proper divisors (1).

87683647 is an equidigital number, since it uses as much as digits as its factorization.

87683647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1354752, while the sum is 49.

The square root of 87683647 is about 9363.9546666993. The cubic root of 87683647 is about 444.2623760339.

The spelling of 87683647 in words is "eighty-seven million, six hundred eighty-three thousand, six hundred forty-seven".