7217085860 has 12 divisors (see below), whose sum is σ = 15155880348. Its totient is φ = 2886834336.

The previous prime is 7217085853. The next prime is 7217085919. The reversal of 7217085860 is 685807127.

It can be written as a sum of positive squares in 2 ways, for example, as 1330206784 + 5886879076 = 36472^2 + 76726^2 .

It is a super-2 number, since 2×7217085860² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 180427127 + ... + 180427166.

It is an arithmetic number, because the mean of its divisors is an integer number (1262990029).

Almost surely, 2^7217085860 is an apocalyptic number.

It is an amenable number.

7217085860 is an abundant number, since it is smaller than the sum of its proper divisors (7938794488).

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

7217085860 is a wasteful number, since it uses less digits than its factorization.

7217085860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360854302 (or 360854300 counting only the distinct ones).

The product of its (nonzero) digits is 188160, while the sum is 44.

The square root of 7217085860 is about 84953.4334797600. The cubic root of 7217085860 is about 1932.5049900378.

The spelling of 7217085860 in words is "seven billion, two hundred seventeen million, eighty-five thousand, eight hundred sixty".