85646471 has 8 divisors (see below), whose sum is σ = 90518400. Its totient is φ = 80811000.

The previous prime is 85646467. The next prime is 85646489. The reversal of 85646471 is 17464658.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85646471 - 2² = 85646467 is a prime.

It is a super-3 number, since 3×85646471³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85646401) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4211 + ... + 13748.

It is an arithmetic number, because the mean of its divisors is an integer number (11314800).

Almost surely, 2^85646471 is an apocalyptic number.

85646471 is a deficient number, since it is larger than the sum of its proper divisors (4871929).

85646471 is a wasteful number, since it uses less digits than its factorization.

85646471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18229.

The product of its digits is 161280, while the sum is 41.

The square root of 85646471 is about 9254.5378598826. The cubic root of 85646471 is about 440.7948288293.

The spelling of 85646471 in words is "eighty-five million, six hundred forty-six thousand, four hundred seventy-one".