85786665 has 16 divisors (see below), whose sum is σ = 143227008. Its totient is φ = 43763456.

The previous prime is 85786663. The next prime is 85786667. The reversal of 85786665 is 56668758.

It is an interprime number because it is at equal distance from previous prime (85786663) and next prime (85786667).

It is a cyclic number.

It is not a de Polignac number, because 85786665 - 2¹ = 85786663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (85786661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 123984 + ... + 124673.

It is an arithmetic number, because the mean of its divisors is an integer number (8951688).

Almost surely, 2^85786665 is an apocalyptic number.

It is an amenable number.

85786665 is a deficient number, since it is larger than the sum of its proper divisors (57440343).

85786665 is a wasteful number, since it uses less digits than its factorization.

85786665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248688.

The product of its digits is 2419200, while the sum is 51.

The square root of 85786665 is about 9262.1091010633. The cubic root of 85786665 is about 441.0352088548.

The spelling of 85786665 in words is "eighty-five million, seven hundred eighty-six thousand, six hundred sixty-five".