85567745 has 4 divisors (see below), whose sum is σ = 102681300. Its totient is φ = 68454192.

The previous prime is 85567739. The next prime is 85567747. The reversal of 85567745 is 54776558.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 54776558 = 2 ⋅27388279.

It can be written as a sum of positive squares in 2 ways, for example, as 24039409 + 61528336 = 4903^2 + 7844^2 .

It is a cyclic number.

It is not a de Polignac number, because 85567745 - 2¹⁰ = 85566721 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 85567745.

It is not an unprimeable number, because it can be changed into a prime (85567747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8556770 + ... + 8556779.

It is an arithmetic number, because the mean of its divisors is an integer number (25670325).

Almost surely, 2^85567745 is an apocalyptic number.

It is an amenable number.

85567745 is a deficient number, since it is larger than the sum of its proper divisors (17113555).

85567745 is a wasteful number, since it uses less digits than its factorization.

85567745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17113554.

The product of its digits is 1176000, while the sum is 47.

The square root of 85567745 is about 9250.2835091688. The cubic root of 85567745 is about 440.6597282958.

The spelling of 85567745 in words is "eighty-five million, five hundred sixty-seven thousand, seven hundred forty-five".