2660206890 has 64 divisors (see below), whose sum is σ = 6970603392. Its totient is φ = 644371200.

The previous prime is 2660206867. The next prime is 2660206907. The reversal of 2660206890 is 986020662.

2660206890 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 532444 + ... + 537416.

It is an arithmetic number, because the mean of its divisors is an integer number (108915678).

Almost surely, 2^2660206890 is an apocalyptic number.

2660206890 is an abundant number, since it is smaller than the sum of its proper divisors (4310396502).

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

2660206890 is a wasteful number, since it uses less digits than its factorization.

2660206890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6615.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 2660206890 is about 51577.1935064327. The cubic root of 2660206890 is about 1385.6019035785.

The spelling of 2660206890 in words is "two billion, six hundred sixty million, two hundred six thousand, eight hundred ninety".