2642066660 has 24 divisors (see below), whose sum is σ = 5840358720. Its totient is φ = 1001204064.

The previous prime is 2642066653. The next prime is 2642066681. The reversal of 2642066660 is 666602462.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3476024 + ... + 3476783.

It is an arithmetic number, because the mean of its divisors is an integer number (243348280).

Almost surely, 2^2642066660 is an apocalyptic number.

2642066660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2642066660 is an abundant number, since it is smaller than the sum of its proper divisors (3198292060).

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

2642066660 is a wasteful number, since it uses less digits than its factorization.

2642066660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6952835 (or 6952833 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 38.

The square root of 2642066660 is about 51401.0375381665. The cubic root of 2642066660 is about 1382.4451957561.

The spelling of 2642066660 in words is "two billion, six hundred forty-two million, sixty-six thousand, six hundred sixty".