85860387 has 48 divisors (see below), whose sum is σ = 139782240. Its totient is φ = 50512896.

The previous prime is 85860377. The next prime is 85860391. The reversal of 85860387 is 78306858.

It is not a de Polignac number, because 85860387 - 2¹⁸ = 85598243 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (85860377) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 163908 + ... + 164430.

It is an arithmetic number, because the mean of its divisors is an integer number (2912130).

Almost surely, 2^85860387 is an apocalyptic number.

85860387 is a gapful number since it is divisible by the number (87) formed by its first and last digit.

85860387 is a deficient number, since it is larger than the sum of its proper divisors (53921853).

85860387 is a wasteful number, since it uses less digits than its factorization.

85860387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 612 (or 609 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 85860387 is about 9266.0880095108. The cubic root of 85860387 is about 441.1615093248.

The spelling of 85860387 in words is "eighty-five million, eight hundred sixty thousand, three hundred eighty-seven".