2066636061 has 24 divisors (see below), whose sum is σ = 3591149120. Its totient is φ = 1118779776.

The previous prime is 2066636053. The next prime is 2066636071. The reversal of 2066636061 is 1606366602.

It is not a de Polignac number, because 2066636061 - 2³ = 2066636053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066636041) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 862060 + ... + 864453.

Almost surely, 2^2066636061 is an apocalyptic number.

2066636061 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2066636061 is a deficient number, since it is larger than the sum of its proper divisors (1524513059).

2066636061 is a wasteful number, since it uses less digits than its factorization.

2066636061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1726545 (or 1726542 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2066636061 is about 45460.2690379193. The cubic root of 2066636061 is about 1273.7611570015.

The spelling of 2066636061 in words is "two billion, sixty-six million, six hundred thirty-six thousand, sixty-one".