64085172 has 48 divisors (see below), whose sum is σ = 159022080. Its totient is φ = 20086656.

The previous prime is 64085171. The next prime is 64085183. The reversal of 64085172 is 27158046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64085171) 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, 58413 + ... + 59499.

It is an arithmetic number, because the mean of its divisors is an integer number (3312960).

Almost surely, 2^64085172 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64085172, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79511040).

64085172 is an abundant number, since it is smaller than the sum of its proper divisors (94936908).

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

64085172 is a wasteful number, since it uses less digits than its factorization.

64085172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1145 (or 1109 counting only the distinct ones).

The product of its (nonzero) digits is 13440, while the sum is 33.

The square root of 64085172 is about 8005.3214801156. The cubic root of 64085172 is about 400.1773630109.

The spelling of 64085172 in words is "sixty-four million, eighty-five thousand, one hundred seventy-two".