85601987 has 8 divisors (see below), whose sum is σ = 90979200. Its totient is φ = 80262784.

The previous prime is 85601981. The next prime is 85602007. The reversal of 85601987 is 78910658.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85601987 - 2¹⁴ = 85585603 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85601981) 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 7 ways as a sum of consecutive naturals, for example, 4787 + ... + 13932.

It is an arithmetic number, because the mean of its divisors is an integer number (11372400).

Almost surely, 2^85601987 is an apocalyptic number.

85601987 is a deficient number, since it is larger than the sum of its proper divisors (5377213).

85601987 is a wasteful number, since it uses less digits than its factorization.

85601987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19005.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 85601987 is about 9252.1341862297. The cubic root of 85601987 is about 440.7185006681.

The spelling of 85601987 in words is "eighty-five million, six hundred one thousand, nine hundred eighty-seven".