7166663220 has 48 divisors (see below), whose sum is σ = 20308438080. Its totient is φ = 1888083456.

The previous prime is 7166663209. The next prime is 7166663269. The reversal of 7166663220 is 223666617.

It is a super-2 number, since 2×7166663220² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 714565 + ... + 724524.

It is an arithmetic number, because the mean of its divisors is an integer number (423092460).

Almost surely, 2^7166663220 is an apocalyptic number.

It is an amenable number.

7166663220 is an abundant number, since it is smaller than the sum of its proper divisors (13141774860).

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

7166663220 is a wasteful number, since it uses less digits than its factorization.

7166663220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1439184 (or 1439182 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 39.

The square root of 7166663220 is about 84656.1469711444. The cubic root of 7166663220 is about 1927.9939441423.

The spelling of 7166663220 in words is "seven billion, one hundred sixty-six million, six hundred sixty-three thousand, two hundred twenty".