85569580 has 24 divisors (see below), whose sum is σ = 182644560. Its totient is φ = 33666240.

The previous prime is 85569577. The next prime is 85569587. The reversal of 85569580 is 8596558.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 85569580.

It is not an unprimeable number, because it can be changed into a prime (85569587) 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 7 ways as a sum of consecutive naturals, for example, 33850 + ... + 36289.

It is an arithmetic number, because the mean of its divisors is an integer number (7610190).

Almost surely, 2^85569580 is an apocalyptic number.

It is an amenable number.

85569580 is an abundant number, since it is smaller than the sum of its proper divisors (97074980).

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

85569580 is a wasteful number, since it uses less digits than its factorization.

85569580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70209 (or 70207 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 46.

The square root of 85569580 is about 9250.3826947862. The cubic root of 85569580 is about 440.6628782554.

The spelling of 85569580 in words is "eighty-five million, five hundred sixty-nine thousand, five hundred eighty".