2066606994 has 32 divisors (see below), whose sum is σ = 4330174464. Its totient is φ = 656282000.

The previous prime is 2066606981. The next prime is 2066607007. The reversal of 2066606994 is 4996066602.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2066606981) and next prime (2066607007).

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 15 ways as a sum of consecutive naturals, for example, 4807 + ... + 64469.

It is an arithmetic number, because the mean of its divisors is an integer number (135317952).

Almost surely, 2^2066606994 is an apocalyptic number.

2066606994 is an abundant number, since it is smaller than the sum of its proper divisors (2263567470).

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

2066606994 is a wasteful number, since it uses less digits than its factorization.

2066606994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59942.

The product of its (nonzero) digits is 839808, while the sum is 48.

The square root of 2066606994 is about 45459.9493400510. The cubic root of 2066606994 is about 1273.7551852051.

The spelling of 2066606994 in words is "two billion, sixty-six million, six hundred six thousand, nine hundred ninety-four".