85816542 has 96 divisors (see below), whose sum is σ = 214589952. Its totient is φ = 22819104.

The previous prime is 85816529. The next prime is 85816547. The reversal of 85816542 is 24561858.

It is a super-3 number, since 3×85816542³ (a number of 25 digits) contains 333 as substring.

Its product of digits (76800) is a multiple of the sum of its prime factors (100).

It is a self number, because there is not a number n which added to its sum of digits gives 85816542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85816547) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2319348 + ... + 2319384.

It is an arithmetic number, because the mean of its divisors is an integer number (2235312).

Almost surely, 2^85816542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 85816542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107294976).

85816542 is an abundant number, since it is smaller than the sum of its proper divisors (128773410).

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

85816542 is an equidigital number, since it uses as much as digits as its factorization.

85816542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100 (or 72 counting only the distinct ones).

The product of its digits is 76800, while the sum is 39.

The square root of 85816542 is about 9263.7218222483. The cubic root of 85816542 is about 441.0864028235.

The spelling of 85816542 in words is "eighty-five million, eight hundred sixteen thousand, five hundred forty-two".