85570722 has 16 divisors (see below), whose sum is σ = 190157280. Its totient is φ = 28523556.

The previous prime is 85570721. The next prime is 85570729. The reversal of 85570722 is 22707558.

85570722 is a `hidden beast` number, since 85 + 570 + 7 + 2 + 2 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (85570721) 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, 792268 + ... + 792375.

It is an arithmetic number, because the mean of its divisors is an integer number (11884830).

Almost surely, 2^85570722 is an apocalyptic number.

85570722 is an abundant number, since it is smaller than the sum of its proper divisors (104586558).

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

85570722 is a wasteful number, since it uses less digits than its factorization.

85570722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1584654 (or 1584648 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 36.

The square root of 85570722 is about 9250.4444217562. Note that the first 4 decimals coincide. The cubic root of 85570722 is about 440.6648385890.

The spelling of 85570722 in words is "eighty-five million, five hundred seventy thousand, seven hundred twenty-two".