85566743 has 8 divisors (see below), whose sum is σ = 87849408. Its totient is φ = 83303424.

The previous prime is 85566721. The next prime is 85566749. The reversal of 85566743 is 34766558.

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 85566743 - 2²⁰ = 84518167 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 85566694 and 85566703.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85566749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4355 + ... + 13787.

It is an arithmetic number, because the mean of its divisors is an integer number (10981176).

Almost surely, 2^85566743 is an apocalyptic number.

85566743 is a deficient number, since it is larger than the sum of its proper divisors (2282665).

85566743 is a wasteful number, since it uses less digits than its factorization.

85566743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9673.

The product of its digits is 604800, while the sum is 44.

The square root of 85566743 is about 9250.2293485081. The cubic root of 85566743 is about 440.6580082443.

The spelling of 85566743 in words is "eighty-five million, five hundred sixty-six thousand, seven hundred forty-three".