85785574 has 12 divisors (see below), whose sum is σ = 149687244. Its totient is φ = 36765204.

The previous prime is 85785569. The next prime is 85785593. The reversal of 85785574 is 47558758.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 437584 + ... + 437779.

It is an arithmetic number, because the mean of its divisors is an integer number (12473937).

Almost surely, 2^85785574 is an apocalyptic number.

85785574 is a deficient number, since it is larger than the sum of its proper divisors (63901670).

85785574 is a wasteful number, since it uses less digits than its factorization.

85785574 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 875379 (or 875372 counting only the distinct ones).

The product of its digits is 1568000, while the sum is 49.

The square root of 85785574 is about 9262.0502050032. The cubic root of 85785574 is about 441.0333392113.

The spelling of 85785574 in words is "eighty-five million, seven hundred eighty-five thousand, five hundred seventy-four".