85866743 has 4 divisors (see below), whose sum is σ = 87863688. Its totient is φ = 83869800.

The previous prime is 85866727. The next prime is 85866749. The reversal of 85866743 is 34766858.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 85866743 - 2⁴ = 85866727 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85866749) 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, 998408 + ... + 998493.

It is an arithmetic number, because the mean of its divisors is an integer number (21965922).

Almost surely, 2^85866743 is an apocalyptic number.

85866743 is a deficient number, since it is larger than the sum of its proper divisors (1996945).

85866743 is a wasteful number, since it uses less digits than its factorization.

85866743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1996944.

The product of its digits is 967680, while the sum is 47.

The square root of 85866743 is about 9266.4309742209. The cubic root of 85866743 is about 441.1723950330.

The spelling of 85866743 in words is "eighty-five million, eight hundred sixty-six thousand, seven hundred forty-three".