7217070516 has 30 divisors (see below), whose sum is σ = 18866848770. Its totient is φ = 2405690064.

The previous prime is 7217070481. The next prime is 7217070521. The reversal of 7217070516 is 6150707127.

7217070516 is a `hidden beast` number, since 7 + 2 + 1 + 70 + 70 + 516 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6921574416 + 295496100 = 83196^2 + 17190^2 .

It is a super-2 number, since 2×7217070516² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 11137131 + ... + 11137778.

It is an arithmetic number, because the mean of its divisors is an integer number (628894959).

Almost surely, 2^7217070516 is an apocalyptic number.

It is an amenable number.

7217070516 is an abundant number, since it is smaller than the sum of its proper divisors (11649778254).

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

7217070516 is a wasteful number, since it uses less digits than its factorization.

7217070516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22274925 (or 22274914 counting only the distinct ones).

The product of its (nonzero) digits is 20580, while the sum is 36.

The square root of 7217070516 is about 84953.3431714138. The cubic root of 7217070516 is about 1932.5036204925.

The spelling of 7217070516 in words is "seven billion, two hundred seventeen million, seventy thousand, five hundred sixteen".