85724527 has 4 divisors (see below), whose sum is σ = 97970896. Its totient is φ = 73478160.

The previous prime is 85724501. The next prime is 85724539. The reversal of 85724527 is 72542758.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 85724527 - 2¹¹ = 85722479 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85724527.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85724027) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6123174 + ... + 6123187.

It is an arithmetic number, because the mean of its divisors is an integer number (24492724).

Almost surely, 2^85724527 is an apocalyptic number.

85724527 is a deficient number, since it is larger than the sum of its proper divisors (12246369).

85724527 is a wasteful number, since it uses less digits than its factorization.

85724527 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12246368.

The product of its digits is 156800, while the sum is 40.

The square root of 85724527 is about 9258.7540738482. The cubic root of 85724527 is about 440.9286978749.

The spelling of 85724527 in words is "eighty-five million, seven hundred twenty-four thousand, five hundred twenty-seven".