85543744 has 84 divisors (see below), whose sum is σ = 200802240. Its totient is φ = 35842560.

The previous prime is 85543723. The next prime is 85543747. The reversal of 85543744 is 44734558.

Its product of digits (268800) is a multiple of the sum of its prime factors (768).

It is a junction number, because it is equal to n+sod(n) for n = 85543697 and 85543706.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85543747) 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, 118617 + ... + 119335.

Almost surely, 2^85543744 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85543744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100401120).

85543744 is an abundant number, since it is smaller than the sum of its proper divisors (115258496).

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

85543744 is a wasteful number, since it uses less digits than its factorization.

85543744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 768 (or 745 counting only the distinct ones).

The product of its digits is 268800, while the sum is 40.

The square root of 85543744 is about 9248.9861065957. The cubic root of 85543744 is about 440.6185240502.

The spelling of 85543744 in words is "eighty-five million, five hundred forty-three thousand, seven hundred forty-four".