2066660001 has 40 divisors (see below), whose sum is σ = 3713983680. Its totient is φ = 1118787552.

The previous prime is 2066659993. The next prime is 2066660017. The reversal of 2066660001 is 1000666602.

It is not a de Polignac number, because 2066660001 - 2³ = 2066659993 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2066660041) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 85146 + ... + 106691.

It is an arithmetic number, because the mean of its divisors is an integer number (92849592).

Almost surely, 2^2066660001 is an apocalyptic number.

2066660001 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2066660001 is a deficient number, since it is larger than the sum of its proper divisors (1647323679).

2066660001 is a wasteful number, since it uses less digits than its factorization.

2066660001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191875 (or 191866 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2066660001 is about 45460.5323440014. The cubic root of 2066660001 is about 1273.7660754169.

The spelling of 2066660001 in words is "two billion, sixty-six million, six hundred sixty thousand, one".