7021316660 has 24 divisors (see below), whose sum is σ = 14946751176. Its totient is φ = 2770053120.

The previous prime is 7021316633. The next prime is 7021316671. The reversal of 7021316660 is 666131207.

It can be written as a sum of positive squares in 4 ways, for example, as 1553305744 + 5468010916 = 39412^2 + 73946^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403101 + ... + 2406020.

It is an arithmetic number, because the mean of its divisors is an integer number (622781299).

Almost surely, 2^7021316660 is an apocalyptic number.

It is an amenable number.

7021316660 is an abundant number, since it is smaller than the sum of its proper divisors (7925434516).

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

7021316660 is a wasteful number, since it uses less digits than its factorization.

7021316660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4809203 (or 4809201 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 7021316660 is about 83793.2972259715. The cubic root of 7021316660 is about 1914.8709914069.

Adding to 7021316660 its reverse (666131207), we get a palindrome (7687447867).

The spelling of 7021316660 in words is "seven billion, twenty-one million, three hundred sixteen thousand, six hundred sixty".