85821708 has 48 divisors (see below), whose sum is σ = 240907520. Its totient is φ = 23229504.

The previous prime is 85821691. The next prime is 85821709. The reversal of 85821708 is 80712858.

It is not an unprimeable number, because it can be changed into a prime (85821709) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25291 + ... + 28482.

Almost surely, 2^85821708 is an apocalyptic number.

It is an amenable number.

85821708 is an abundant number, since it is smaller than the sum of its proper divisors (155085812).

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

85821708 is a wasteful number, since it uses less digits than its factorization.

85821708 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53806 (or 53804 counting only the distinct ones).

The product of its (nonzero) digits is 35840, while the sum is 39.

The square root of 85821708 is about 9264.0006476684. Note that the first 3 decimals coincide. The cubic root of 85821708 is about 441.0952535128.

The spelling of 85821708 in words is "eighty-five million, eight hundred twenty-one thousand, seven hundred eight".