2020666890 has 32 divisors (see below), whose sum is σ = 5290474176. Its totient is φ = 489858560.

The previous prime is 2020666889. The next prime is 2020666931. The reversal of 2020666890 is 986660202.

It is a Curzon 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, 3061287 + ... + 3061946.

It is an arithmetic number, because the mean of its divisors is an integer number (165327318).

Almost surely, 2^2020666890 is an apocalyptic number.

2020666890 is an abundant number, since it is smaller than the sum of its proper divisors (3269807286).

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

2020666890 is a wasteful number, since it uses less digits than its factorization.

2020666890 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6123254.

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

The square root of 2020666890 is about 44951.8285501269. The cubic root of 2020666890 is about 1264.2459618058.

The spelling of 2020666890 in words is "two billion, twenty million, six hundred sixty-six thousand, eight hundred ninety".