85177689 has 4 divisors (see below), whose sum is σ = 113570256. Its totient is φ = 56785124.

The previous prime is 85177679. The next prime is 85177693. The reversal of 85177689 is 98677158.

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 a cyclic number.

It is not a de Polignac number, because 85177689 - 2⁵ = 85177657 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85177619) 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, 14196279 + ... + 14196284.

It is an arithmetic number, because the mean of its divisors is an integer number (28392564).

Almost surely, 2^85177689 is an apocalyptic number.

It is an amenable number.

85177689 is a deficient number, since it is larger than the sum of its proper divisors (28392567).

85177689 is a wasteful number, since it uses less digits than its factorization.

85177689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28392566.

The product of its digits is 846720, while the sum is 51.

The square root of 85177689 is about 9229.1759653828. The cubic root of 85177689 is about 439.9891336848.

The spelling of 85177689 in words is "eighty-five million, one hundred seventy-seven thousand, six hundred eighty-nine".