85617071 has 4 divisors (see below), whose sum is σ = 88378944. Its totient is φ = 82855200.

The previous prime is 85617067. The next prime is 85617079. The reversal of 85617071 is 17071658.

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 85617071 - 2² = 85617067 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85617079) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1380890 + ... + 1380951.

It is an arithmetic number, because the mean of its divisors is an integer number (22094736).

Almost surely, 2^85617071 is an apocalyptic number.

85617071 is a deficient number, since it is larger than the sum of its proper divisors (2761873).

85617071 is a wasteful number, since it uses less digits than its factorization.

85617071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2761872.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 85617071 is about 9252.9493135973. The cubic root of 85617071 is about 440.7443856102.

The spelling of 85617071 in words is "eighty-five million, six hundred seventeen thousand, seventy-one".