7213660 has 24 divisors (see below), whose sum is σ = 15212736. Its totient is φ = 2873280.

The previous prime is 7213639. The next prime is 7213667. The reversal of 7213660 is 663127.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7213667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5245 + ... + 6475.

It is an arithmetic number, because the mean of its divisors is an integer number (633864).

Almost surely, 2^7213660 is an apocalyptic number.

It is an amenable number.

7213660 is an abundant number, since it is smaller than the sum of its proper divisors (7999076).

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

7213660 is a wasteful number, since it uses less digits than its factorization.

7213660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1533 (or 1531 counting only the distinct ones).

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 7213660 is about 2685.8257575651. The cubic root of 7213660 is about 193.2199163027.

Adding to 7213660 its reverse (663127), we get a palindrome (7876787).

The spelling of 7213660 in words is "seven million, two hundred thirteen thousand, six hundred sixty".