85665828 has 12 divisors (see below), whose sum is σ = 199886960. Its totient is φ = 28555272.

The previous prime is 85665799. The next prime is 85665857. The reversal of 85665828 is 82856658.

It is an interprime number because it is at equal distance from previous prime (85665799) and next prime (85665857).

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3569398 + ... + 3569421.

Almost surely, 2^85665828 is an apocalyptic number.

It is an amenable number.

85665828 is an abundant number, since it is smaller than the sum of its proper divisors (114221132).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

85665828 is a wasteful number, since it uses less digits than its factorization.

85665828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138826 (or 7138824 counting only the distinct ones).

The product of its digits is 921600, while the sum is 48.

The square root of 85665828 is about 9255.5836120690. The cubic root of 85665828 is about 440.8280344114.

The spelling of 85665828 in words is "eighty-five million, six hundred sixty-five thousand, eight hundred twenty-eight".