7981164 has 72 divisors (see below), whose sum is σ = 21228480. Its totient is φ = 2525952.

The previous prime is 7981151. The next prime is 7981189. The reversal of 7981164 is 4611897.

7981164 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 an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 89632 + ... + 89720.

It is an arithmetic number, because the mean of its divisors is an integer number (294840).

Almost surely, 2^7981164 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 7981164, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10614240).

7981164 is an abundant number, since it is smaller than the sum of its proper divisors (13247316).

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

7981164 is a wasteful number, since it uses less digits than its factorization.

7981164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 194 counting only the distinct ones).

The product of its digits is 12096, while the sum is 36.

The square root of 7981164 is about 2825.0953966194. The cubic root of 7981164 is about 199.8429099793.

The spelling of 7981164 in words is "seven million, nine hundred eighty-one thousand, one hundred sixty-four".