85610289 has 4 divisors (see below), whose sum is σ = 114147056. Its totient is φ = 57073524.

The previous prime is 85610279. The next prime is 85610293. The reversal of 85610289 is 98201658.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 85610289 - 2¹² = 85606193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85610279) 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, 14268379 + ... + 14268384.

It is an arithmetic number, because the mean of its divisors is an integer number (28536764).

Almost surely, 2^85610289 is an apocalyptic number.

It is an amenable number.

85610289 is a deficient number, since it is larger than the sum of its proper divisors (28536767).

85610289 is a wasteful number, since it uses less digits than its factorization.

85610289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28536766.

The product of its (nonzero) digits is 34560, while the sum is 39.

The square root of 85610289 is about 9252.5828285944. The cubic root of 85610289 is about 440.7327477156.

The spelling of 85610289 in words is "eighty-five million, six hundred ten thousand, two hundred eighty-nine".