7165440 has 120 divisors (see below), whose sum is σ = 24895728. Its totient is φ = 1904640.

The previous prime is 7165427. The next prime is 7165463. The reversal of 7165440 is 445617.

7165440 is a `hidden beast` number, since 7 + 1 + 654 + 4 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (120).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 22885 + ... + 23195.

Almost surely, 2^7165440 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 7165440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (12447864).

7165440 is an abundant number, since it is smaller than the sum of its proper divisors (17730288).

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

7165440 is a wasteful number, since it uses less digits than its factorization.

7165440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 321 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 7165440 is about 2676.8339507709. The cubic root of 7165440 is about 192.7884246650.

The spelling of 7165440 in words is "seven million, one hundred sixty-five thousand, four hundred forty".