2660428866 has 32 divisors (see below), whose sum is σ = 5511356928. Its totient is φ = 855256320.

The previous prime is 2660428819. The next prime is 2660428867. The reversal of 2660428866 is 6688240662.

It is not an unprimeable number, because it can be changed into a prime (2660428867) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30090 + ... + 78906.

It is an arithmetic number, because the mean of its divisors is an integer number (172229904).

Almost surely, 2^2660428866 is an apocalyptic number.

2660428866 is an abundant number, since it is smaller than the sum of its proper divisors (2850928062).

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

2660428866 is a wasteful number, since it uses less digits than its factorization.

2660428866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49146.

The product of its (nonzero) digits is 1327104, while the sum is 48.

The square root of 2660428866 is about 51579.3453428793. The cubic root of 2660428866 is about 1385.6404421617.

The spelling of 2660428866 in words is "two billion, six hundred sixty million, four hundred twenty-eight thousand, eight hundred sixty-six".