85021684 has 24 divisors (see below), whose sum is σ = 165771648. Its totient is φ = 37823040.

The previous prime is 85021681. The next prime is 85021691. The reversal of 85021684 is 48612058.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85021681) 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, 18489 + ... + 22624.

It is an arithmetic number, because the mean of its divisors is an integer number (6907152).

Almost surely, 2^85021684 is an apocalyptic number.

It is an amenable number.

85021684 is a deficient number, since it is larger than the sum of its proper divisors (80749964).

85021684 is a wasteful number, since it uses less digits than its factorization.

85021684 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41175 (or 41173 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 85021684 is about 9220.7203623144. The cubic root of 85021684 is about 439.7203526074.

The spelling of 85021684 in words is "eighty-five million, twenty-one thousand, six hundred eighty-four".