85469681 has 12 divisors (see below), whose sum is σ = 96136656. Its totient is φ = 75888120.

The previous prime is 85469677. The next prime is 85469731. The reversal of 85469681 is 18696458.

It is not a de Polignac number, because 85469681 - 2² = 85469677 is a prime.

It is a super-2 number, since 2×85469681² = 14610132740483522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (85469621) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3011 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (8011388).

Almost surely, 2^85469681 is an apocalyptic number.

It is an amenable number.

85469681 is a deficient number, since it is larger than the sum of its proper divisors (10666975).

85469681 is a wasteful number, since it uses less digits than its factorization.

85469681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16492 (or 16481 counting only the distinct ones).

The product of its digits is 414720, while the sum is 47.

The square root of 85469681 is about 9244.9813953301. The cubic root of 85469681 is about 440.4913261563.

The spelling of 85469681 in words is "eighty-five million, four hundred sixty-nine thousand, six hundred eighty-one".