85866744 has 32 divisors (see below), whose sum is σ = 219237120. Its totient is φ = 28012896.

The previous prime is 85866727. The next prime is 85866749. The reversal of 85866744 is 44766858.

It is a junction number, because it is equal to n+sod(n) for n = 85866693 and 85866702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85866749) 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, 36934 + ... + 39189.

It is an arithmetic number, because the mean of its divisors is an integer number (6851160).

Almost surely, 2^85866744 is an apocalyptic number.

It is an amenable number.

85866744 is an abundant number, since it is smaller than the sum of its proper divisors (133370376).

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

85866744 is a wasteful number, since it uses less digits than its factorization.

85866744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76179 (or 76175 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 48.

The square root of 85866744 is about 9266.4310281791. The cubic root of 85866744 is about 441.1723967457.

The spelling of 85866744 in words is "eighty-five million, eight hundred sixty-six thousand, seven hundred forty-four".