85685472 has 48 divisors (see below), whose sum is σ = 249918480. Its totient is φ = 28561536.

The previous prime is 85685461. The next prime is 85685473. The reversal of 85685472 is 27458658.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×85685472² = 14684000223725568, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85685473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48723 + ... + 50450.

It is an arithmetic number, because the mean of its divisors is an integer number (5206635).

Almost surely, 2^85685472 is an apocalyptic number.

It is an amenable number.

85685472 is an abundant number, since it is smaller than the sum of its proper divisors (164233008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85685472 is a wasteful number, since it uses less digits than its factorization.

85685472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99192 (or 99178 counting only the distinct ones).

The product of its digits is 537600, while the sum is 45.

The square root of 85685472 is about 9256.6447485036. The cubic root of 85685472 is about 440.8617272085.

The spelling of 85685472 in words is "eighty-five million, six hundred eighty-five thousand, four hundred seventy-two".