2288166660 has 72 divisors (see below), whose sum is σ = 7474685400. Its totient is φ = 563240448.

The previous prime is 2288166607. The next prime is 2288166667. The reversal of 2288166660 is 666618822.

It can be written as a sum of positive squares in 4 ways, for example, as 93431556 + 2194735104 = 9666^2 + 46848^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (2288166667) 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 23 ways as a sum of consecutive naturals, for example, 486585 + ... + 491264.

It is an arithmetic number, because the mean of its divisors is an integer number (103815075).

Almost surely, 2^2288166660 is an apocalyptic number.

2288166660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2288166660 is an abundant number, since it is smaller than the sum of its proper divisors (5186518740).

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

2288166660 is a wasteful number, since it uses less digits than its factorization.

2288166660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 977877 (or 977872 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 2288166660 is about 47834.7850418500. The cubic root of 2288166660 is about 1317.7384484408.

The spelling of 2288166660 in words is "two billion, two hundred eighty-eight million, one hundred sixty-six thousand, six hundred sixty".