85644475 has 24 divisors (see below), whose sum is σ = 125293568. Its totient is φ = 56829600.

The previous prime is 85644473. The next prime is 85644491. The reversal of 85644475 is 57444658.

It is not a de Polignac number, because 85644475 - 2¹ = 85644473 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85644473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2469 + ... + 13318.

Almost surely, 2^85644475 is an apocalyptic number.

85644475 is a deficient number, since it is larger than the sum of its proper divisors (39649093).

85644475 is a wasteful number, since it uses less digits than its factorization.

85644475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15835 (or 15830 counting only the distinct ones).

The product of its digits is 537600, while the sum is 43.

The square root of 85644475 is about 9254.4300202660. The cubic root of 85644475 is about 440.7914045461.

The spelling of 85644475 in words is "eighty-five million, six hundred forty-four thousand, four hundred seventy-five".