85663587 has 12 divisors (see below), whose sum is σ = 115966536. Its totient is φ = 56247840.

The previous prime is 85663573. The next prime is 85663603. The reversal of 85663587 is 78536658.

It is not a de Polignac number, because 85663587 - 2¹¹ = 85661539 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85663517) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10287 + ... + 16647.

It is an arithmetic number, because the mean of its divisors is an integer number (9663878).

Almost surely, 2^85663587 is an apocalyptic number.

85663587 is a deficient number, since it is larger than the sum of its proper divisors (30302949).

85663587 is an equidigital number, since it uses as much as digits as its factorization.

85663587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6498 (or 6431 counting only the distinct ones).

The product of its digits is 1209600, while the sum is 48.

The square root of 85663587 is about 9255.4625492192. The cubic root of 85663587 is about 440.8241903884.

The spelling of 85663587 in words is "eighty-five million, six hundred sixty-three thousand, five hundred eighty-seven".