85638850 has 24 divisors (see below), whose sum is σ = 173770128. Its totient is φ = 31141200.

The previous prime is 85638829. The next prime is 85638869. The reversal of 85638850 is 5883658.

It is a junction number, because it is equal to n+sod(n) for n = 85638797 and 85638806.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 77304 + ... + 78403.

It is an arithmetic number, because the mean of its divisors is an integer number (7240422).

Almost surely, 2^85638850 is an apocalyptic number.

85638850 is an abundant number, since it is smaller than the sum of its proper divisors (88131278).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85638850 is a wasteful number, since it uses less digits than its factorization.

85638850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155730 (or 155725 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 85638850 is about 9254.1261067699. The cubic root of 85638850 is about 440.7817541632.

The spelling of 85638850 in words is "eighty-five million, six hundred thirty-eight thousand, eight hundred fifty".