7287660 has 36 divisors (see below), whose sum is σ = 22106448. Its totient is φ = 1943328.

The previous prime is 7287647. The next prime is 7287677. The reversal of 7287660 is 667827.

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an Ulam 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, 20064 + ... + 20423.

It is an arithmetic number, because the mean of its divisors is an integer number (614068).

Almost surely, 2^7287660 is an apocalyptic number.

It is an amenable number.

7287660 is an abundant number, since it is smaller than the sum of its proper divisors (14818788).

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

7287660 is a wasteful number, since it uses less digits than its factorization.

7287660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40502 (or 40497 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 7287660 is about 2699.5666318874. The cubic root of 7287660 is about 193.8783734746.

The spelling of 7287660 in words is "seven million, two hundred eighty-seven thousand, six hundred sixty".