85545669 has 12 divisors (see below), whose sum is σ = 125373248. Its totient is φ = 51845640.

The previous prime is 85545661. The next prime is 85545697. The reversal of 85545669 is 96654558.

It is not a de Polignac number, because 85545669 - 2³ = 85545661 is a prime.

It is a super-2 number, since 2×85545669² = 14636122969315122, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85545661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 117469 + ... + 118194.

Almost surely, 2^85545669 is an apocalyptic number.

It is an amenable number.

85545669 is a deficient number, since it is larger than the sum of its proper divisors (39827579).

85545669 is a wasteful number, since it uses less digits than its factorization.

85545669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235688 (or 235677 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 48.

The square root of 85545669 is about 9249.0901714709. The cubic root of 85545669 is about 440.6218291206.

Subtracting 85545669 from its reverse (96654558), we obtain a square (11108889 = 3333²).

The spelling of 85545669 in words is "eighty-five million, five hundred forty-five thousand, six hundred sixty-nine".