85005387 has 6 divisors (see below), whose sum is σ = 122785572. Its totient is φ = 56670252.

The previous prime is 85005377. The next prime is 85005407. The reversal of 85005387 is 78350058.

It is a happy number.

It is not a de Polignac number, because 85005387 - 2¹¹ = 85003339 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85005307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4722513 + ... + 4722530.

It is an arithmetic number, because the mean of its divisors is an integer number (20464262).

Almost surely, 2^85005387 is an apocalyptic number.

85005387 is a deficient number, since it is larger than the sum of its proper divisors (37780185).

85005387 is a wasteful number, since it uses less digits than its factorization.

85005387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9445049 (or 9445046 counting only the distinct ones).

The product of its (nonzero) digits is 33600, while the sum is 36.

The square root of 85005387 is about 9219.8366037582. The cubic root of 85005387 is about 439.6922555378.

The spelling of 85005387 in words is "eighty-five million, five thousand, three hundred eighty-seven".