2066444686 has 32 divisors (see below), whose sum is σ = 3273818112. Its totient is φ = 976963680.

The previous prime is 2066444659. The next prime is 2066444687. The reversal of 2066444686 is 6864446602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066444687) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 525600 + ... + 529516.

It is an arithmetic number, because the mean of its divisors is an integer number (102306816).

Almost surely, 2^2066444686 is an apocalyptic number.

2066444686 is a deficient number, since it is larger than the sum of its proper divisors (1207373426).

2066444686 is a wasteful number, since it uses less digits than its factorization.

2066444686 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4144.

The product of its (nonzero) digits is 1327104, while the sum is 46.

The square root of 2066444686 is about 45458.1641292299. The cubic root of 2066444686 is about 1273.7218381020.

The spelling of 2066444686 in words is "two billion, sixty-six million, four hundred forty-four thousand, six hundred eighty-six".