85206487 has 4 divisors (see below), whose sum is σ = 87284736. Its totient is φ = 83128240.

The previous prime is 85206481. The next prime is 85206503. The reversal of 85206487 is 78460258.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85206487 - 2¹¹ = 85204439 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85206481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1039063 + ... + 1039144.

It is an arithmetic number, because the mean of its divisors is an integer number (21821184).

Almost surely, 2^85206487 is an apocalyptic number.

85206487 is a deficient number, since it is larger than the sum of its proper divisors (2078249).

85206487 is a wasteful number, since it uses less digits than its factorization.

85206487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2078248.

The product of its (nonzero) digits is 107520, while the sum is 40.

The square root of 85206487 is about 9230.7359944914. The cubic root of 85206487 is about 440.0387138801.

The spelling of 85206487 in words is "eighty-five million, two hundred six thousand, four hundred eighty-seven".