85665441 has 12 divisors (see below), whose sum is σ = 117081296. Its totient is φ = 55714080.

The previous prime is 85665439. The next prime is 85665451. The reversal of 85665441 is 14456658.

It is a happy number.

It is not a de Polignac number, because 85665441 - 2¹ = 85665439 is a prime.

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 85665441.

It is not an unprimeable number, because it can be changed into a prime (85665451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3451 + ... + 13536.

Almost surely, 2^85665441 is an apocalyptic number.

It is an amenable number.

85665441 is a deficient number, since it is larger than the sum of its proper divisors (31415855).

85665441 is a wasteful number, since it uses less digits than its factorization.

85665441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17072 (or 17031 counting only the distinct ones).

The product of its digits is 115200, while the sum is 39.

The square root of 85665441 is about 9255.5627057462. The cubic root of 85665441 is about 440.8273705890.

The spelling of 85665441 in words is "eighty-five million, six hundred sixty-five thousand, four hundred forty-one".