2000561787 has 16 divisors (see below), whose sum is σ = 3387194880. Its totient is φ = 1143178056.

The previous prime is 2000561747. The next prime is 2000561789. The reversal of 2000561787 is 7871650002.

2000561787 is a `hidden beast` number, since 20 + 0 + 0 + 561 + 78 + 7 = 666.

It is not a de Polignac number, because 2000561787 - 2¹⁴ = 2000545403 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2000561789) 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, 5292303 + ... + 5292680.

It is an arithmetic number, because the mean of its divisors is an integer number (211699680).

Almost surely, 2^2000561787 is an apocalyptic number.

2000561787 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

2000561787 is a deficient number, since it is larger than the sum of its proper divisors (1386633093).

2000561787 is a wasteful number, since it uses less digits than its factorization.

2000561787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10584999 (or 10584993 counting only the distinct ones).

The product of its (nonzero) digits is 23520, while the sum is 36.

The square root of 2000561787 is about 44727.6400785912. The cubic root of 2000561787 is about 1260.0390067289.

The spelling of 2000561787 in words is "two billion, five hundred sixty-one thousand, seven hundred eighty-seven".