85424671 has 4 divisors (see below), whose sum is σ = 85599144. Its totient is φ = 85250200.

The previous prime is 85424663. The next prime is 85424687. The reversal of 85424671 is 17642458.

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 85424671 - 2³ = 85424663 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85424671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85424611) 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, 86500 + ... + 87481.

It is an arithmetic number, because the mean of its divisors is an integer number (21399786).

Almost surely, 2^85424671 is an apocalyptic number.

85424671 is a deficient number, since it is larger than the sum of its proper divisors (174473).

85424671 is a wasteful number, since it uses less digits than its factorization.

85424671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174472.

The product of its digits is 53760, while the sum is 37.

The square root of 85424671 is about 9242.5467810555. The cubic root of 85424671 is about 440.4139888061.

The spelling of 85424671 in words is "eighty-five million, four hundred twenty-four thousand, six hundred seventy-one".