85723771 has 8 divisors (see below), whose sum is σ = 98120160. Its totient is φ = 73364928.

The previous prime is 85723751. The next prime is 85723787. The reversal of 85723771 is 17732758.

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

It is not a de Polignac number, because 85723771 - 2⁹ = 85723259 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (85723751) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4306 + ... + 13783.

It is an arithmetic number, because the mean of its divisors is an integer number (12265020).

Almost surely, 2^85723771 is an apocalyptic number.

85723771 is a deficient number, since it is larger than the sum of its proper divisors (12396389).

85723771 is a wasteful number, since it uses less digits than its factorization.

85723771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18773.

The product of its digits is 82320, while the sum is 40.

The square root of 85723771 is about 9258.7132475307. The cubic root of 85723771 is about 440.9274016956.

The spelling of 85723771 in words is "eighty-five million, seven hundred twenty-three thousand, seven hundred seventy-one".