2066787659 has 12 divisors (see below), whose sum is σ = 2192839656. Its totient is φ = 1947387552.

The previous prime is 2066787649. The next prime is 2066787673. The reversal of 2066787659 is 9567876602.

It is not a de Polignac number, because 2066787659 - 2²⁸ = 1798352203 is a prime.

It is a super-2 number, since 2×2066787659² = 8543222454789400562, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2066787649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6287 + ... + 64599.

It is an arithmetic number, because the mean of its divisors is an integer number (182736638).

Almost surely, 2^2066787659 is an apocalyptic number.

2066787659 is a deficient number, since it is larger than the sum of its proper divisors (126051997).

2066787659 is an equidigital number, since it uses as much as digits as its factorization.

2066787659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58426 (or 58403 counting only the distinct ones).

The product of its (nonzero) digits is 7620480, while the sum is 56.

The square root of 2066787659 is about 45461.9363753899. The cubic root of 2066787659 is about 1273.7923018050.

The spelling of 2066787659 in words is "two billion, sixty-six million, seven hundred eighty-seven thousand, six hundred fifty-nine".