85193985 has 16 divisors (see below), whose sum is σ = 137067840. Its totient is φ = 45184320.

The previous prime is 85193963. The next prime is 85194007. The reversal of 85193985 is 58939158.

It is an interprime number because it is at equal distance from previous prime (85193963) and next prime (85194007).

It is not a de Polignac number, because 85193985 - 2⁸ = 85193729 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12975 + ... + 18404.

It is an arithmetic number, because the mean of its divisors is an integer number (8566740).

Almost surely, 2^85193985 is an apocalyptic number.

It is an amenable number.

85193985 is a deficient number, since it is larger than the sum of its proper divisors (51873855).

85193985 is a wasteful number, since it uses less digits than its factorization.

85193985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31568.

The product of its digits is 388800, while the sum is 48.

The square root of 85193985 is about 9230.0587755442. The cubic root of 85193985 is about 440.0171911327.

The spelling of 85193985 in words is "eighty-five million, one hundred ninety-three thousand, nine hundred eighty-five".