2066556706 has 16 divisors (see below), whose sum is σ = 3139581888. Its totient is φ = 1020114000.

The previous prime is 2066556673. The next prime is 2066556721. The reversal of 2066556706 is 6076556602.

It is a super-2 number, since 2×2066556706² = 8541313238227140872, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28236 + ... + 70216.

It is an arithmetic number, because the mean of its divisors is an integer number (196223868).

Almost surely, 2^2066556706 is an apocalyptic number.

2066556706 is a deficient number, since it is larger than the sum of its proper divisors (1073025182).

2066556706 is a wasteful number, since it uses less digits than its factorization.

2066556706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42297.

The product of its (nonzero) digits is 453600, while the sum is 43.

The square root of 2066556706 is about 45459.3962344420. The cubic root of 2066556706 is about 1273.7448534358.

The spelling of 2066556706 in words is "two billion, sixty-six million, five hundred fifty-six thousand, seven hundred six".