85935540 has 48 divisors (see below), whose sum is σ = 244222272. Its totient is φ = 22573056.

The previous prime is 85935523. The next prime is 85935559. The reversal of 85935540 is 4553958.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6669 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (5087964).

Almost surely, 2^85935540 is an apocalyptic number.

It is an amenable number.

85935540 is an abundant number, since it is smaller than the sum of its proper divisors (158286732).

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

85935540 is a wasteful number, since it uses less digits than its factorization.

85935540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21456 (or 21454 counting only the distinct ones).

The product of its (nonzero) digits is 108000, while the sum is 39.

The square root of 85935540 is about 9270.1423937284. The cubic root of 85935540 is about 441.2901869895.

The spelling of 85935540 in words is "eighty-five million, nine hundred thirty-five thousand, five hundred forty".