8165772 has 72 divisors (see below), whose sum is σ = 22177792. Its totient is φ = 2624400.

The previous prime is 8165767. The next prime is 8165779. The reversal of 8165772 is 2775618.

8165772 is a `hidden beast` number, since 81 + 6 + 577 + 2 = 666.

8165772 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8165779) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29997 + ... + 30267.

Almost surely, 2^8165772 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 8165772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11088896).

8165772 is an abundant number, since it is smaller than the sum of its proper divisors (14012020).

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

8165772 is a wasteful number, since it uses less digits than its factorization.

8165772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 321 (or 307 counting only the distinct ones).

The product of its digits is 23520, while the sum is 36.

The square root of 8165772 is about 2857.5814949009. The cubic root of 8165772 is about 201.3719998929.

The spelling of 8165772 in words is "eight million, one hundred sixty-five thousand, seven hundred seventy-two".