85855570 has 16 divisors (see below), whose sum is σ = 154664640. Its totient is φ = 34314544.

The previous prime is 85855531. The next prime is 85855579. The reversal of 85855570 is 7555858.

It is not an unprimeable number, because it can be changed into a prime (85855579) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13539 + ... + 18841.

It is an arithmetic number, because the mean of its divisors is an integer number (9666540).

Almost surely, 2^85855570 is an apocalyptic number.

85855570 is a deficient number, since it is larger than the sum of its proper divisors (68809070).

85855570 is a wasteful number, since it uses less digits than its factorization.

85855570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6929.

The product of its (nonzero) digits is 280000, while the sum is 43.

The square root of 85855570 is about 9265.8280795620. The cubic root of 85855570 is about 441.1532590524.

The spelling of 85855570 in words is "eighty-five million, eight hundred fifty-five thousand, five hundred seventy".