81885327 has 8 divisors (see below), whose sum is σ = 111503616. Its totient is φ = 53428632.

The previous prime is 81885253. The next prime is 81885347. The reversal of 81885327 is 72358818.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 81885327 - 2¹⁵ = 81852559 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (81885347) 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, 290233 + ... + 290514.

It is an arithmetic number, because the mean of its divisors is an integer number (13937952).

Almost surely, 2^81885327 is an apocalyptic number.

81885327 is a deficient number, since it is larger than the sum of its proper divisors (29618289).

81885327 is a wasteful number, since it uses less digits than its factorization.

81885327 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 580797.

The product of its digits is 107520, while the sum is 42.

The square root of 81885327 is about 9049.0511657300. The cubic root of 81885327 is about 434.2455359185.

The spelling of 81885327 in words is "eighty-one million, eight hundred eighty-five thousand, three hundred twenty-seven".