87416647 has 2 divisors, whose sum is σ = 87416648. Its totient is φ = 87416646.

The previous prime is 87416603. The next prime is 87416657. The reversal of 87416647 is 74661478.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87416647 is a prime.

It is a nialpdrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87416657) 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, 43708323 + 43708324.

It is an arithmetic number, because the mean of its divisors is an integer number (43708324).

Almost surely, 2^87416647 is an apocalyptic number.

87416647 is a deficient number, since it is larger than the sum of its proper divisors (1).

87416647 is an equidigital number, since it uses as much as digits as its factorization.

87416647 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 225792, while the sum is 43.

The square root of 87416647 is about 9349.6870001086. The cubic root of 87416647 is about 443.8109856802.

The spelling of 87416647 in words is "eighty-seven million, four hundred sixteen thousand, six hundred forty-seven".