2000666057 has 8 divisors (see below), whose sum is σ = 2163975240. Its totient is φ = 1838701440.

The previous prime is 2000665969. The next prime is 2000666069. The reversal of 2000666057 is 7506660002.

It can be written as a sum of positive squares in 4 ways, for example, as 694638736 + 1306027321 = 26356^2 + 36139^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2000666057 - 2⁸ = 2000665801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2000666957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333044 + ... + 338997.

It is an arithmetic number, because the mean of its divisors is an integer number (270496905).

Almost surely, 2^2000666057 is an apocalyptic number.

It is an amenable number.

2000666057 is a deficient number, since it is larger than the sum of its proper divisors (163309183).

2000666057 is a wasteful number, since it uses less digits than its factorization.

2000666057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 672283.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 2000666057 is about 44728.8056737490. The cubic root of 2000666057 is about 1260.0608975774.

The spelling of 2000666057 in words is "two billion, six hundred sixty-six thousand, fifty-seven".