85545691 has 8 divisors (see below), whose sum is σ = 106654464. Its totient is φ = 66658920.

The previous prime is 85545661. The next prime is 85545697. The reversal of 85545691 is 19654558.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 85545691 - 2⁹ = 85545179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85545697) 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, 555415 + ... + 555568.

It is an arithmetic number, because the mean of its divisors is an integer number (13331808).

Almost surely, 2^85545691 is an apocalyptic number.

85545691 is a deficient number, since it is larger than the sum of its proper divisors (21108773).

85545691 is a wasteful number, since it uses less digits than its factorization.

85545691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111001.

The product of its digits is 216000, while the sum is 43.

The square root of 85545691 is about 9249.0913607770. The cubic root of 85545691 is about 440.6218668925.

The spelling of 85545691 in words is "eighty-five million, five hundred forty-five thousand, six hundred ninety-one".