85722387 has 8 divisors (see below), whose sum is σ = 114340800. Its totient is φ = 57126120.

The previous prime is 85722323. The next prime is 85722389. The reversal of 85722387 is 78322758.

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

It is not a de Polignac number, because 85722387 - 2⁶ = 85722323 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85722389) 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, 8812 + ... + 15782.

It is an arithmetic number, because the mean of its divisors is an integer number (14292600).

Almost surely, 2^85722387 is an apocalyptic number.

85722387 is a deficient number, since it is larger than the sum of its proper divisors (28618413).

85722387 is a wasteful number, since it uses less digits than its factorization.

85722387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11073.

The product of its digits is 188160, while the sum is 42.

The square root of 85722387 is about 9258.6385068216. The cubic root of 85722387 is about 440.9250287762.

The spelling of 85722387 in words is "eighty-five million, seven hundred twenty-two thousand, three hundred eighty-seven".