2006864687 has 2 divisors, whose sum is σ = 2006864688. Its totient is φ = 2006864686.

The previous prime is 2006864633. The next prime is 2006864693. The reversal of 2006864687 is 7864686002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2006864687 - 2⁶ = 2006864623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2006864617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1003432343 + 1003432344.

It is an arithmetic number, because the mean of its divisors is an integer number (1003432344).

Almost surely, 2^2006864687 is an apocalyptic number.

2006864687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2006864687 is an equidigital number, since it uses as much as digits as its factorization.

2006864687 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 774144, while the sum is 47.

The square root of 2006864687 is about 44798.0433389674. The cubic root of 2006864687 is about 1261.3608977405.

The spelling of 2006864687 in words is "two billion, six million, eight hundred sixty-four thousand, six hundred eighty-seven".