85669872 has 20 divisors (see below), whose sum is σ = 221313960. Its totient is φ = 28556608.

The previous prime is 85669853. The next prime is 85669873. The reversal of 85669872 is 27896658.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85669873) 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, 892347 + ... + 892442.

It is an arithmetic number, because the mean of its divisors is an integer number (11065698).

Almost surely, 2^85669872 is an apocalyptic number.

It is an amenable number.

85669872 is an abundant number, since it is smaller than the sum of its proper divisors (135644088).

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

85669872 is a wasteful number, since it uses less digits than its factorization.

85669872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1784800 (or 1784794 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 51.

The square root of 85669872 is about 9255.8020722139. The cubic root of 85669872 is about 440.8349709794.

The spelling of 85669872 in words is "eighty-five million, six hundred sixty-nine thousand, eight hundred seventy-two".