85384615 has 4 divisors (see below), whose sum is σ = 102461544. Its totient is φ = 68307688.

The previous prime is 85384589. The next prime is 85384619. The reversal of 85384615 is 51648358.

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

It is a cyclic number.

It is not a de Polignac number, because 85384615 - 2⁵ = 85384583 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

85384615 is a modest number, since divided by 384615 gives 85 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85384619) 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, 8538457 + ... + 8538466.

It is an arithmetic number, because the mean of its divisors is an integer number (25615386).

Almost surely, 2^85384615 is an apocalyptic number.

85384615 is a deficient number, since it is larger than the sum of its proper divisors (17076929).

85384615 is a wasteful number, since it uses less digits than its factorization.

85384615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17076928.

The product of its digits is 115200, while the sum is 40.

The square root of 85384615 is about 9240.3795917700. The cubic root of 85384615 is about 440.3451406985.

The spelling of 85384615 in words is "eighty-five million, three hundred eighty-four thousand, six hundred fifteen".