1066542659 has 16 divisors (see below), whose sum is σ = 1340602368. Its totient is φ = 825900192.

The previous prime is 1066542611. The next prime is 1066542679. The reversal of 1066542659 is 9562456601.

1066542659 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 1066542659 - 2⁸ = 1066542403 is a prime.

It is a super-2 number, since 2×1066542659² = 2275026486933580562, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1066542679) 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, 120407 + ... + 128960.

It is an arithmetic number, because the mean of its divisors is an integer number (83787648).

Almost surely, 2^1066542659 is an apocalyptic number.

1066542659 is a deficient number, since it is larger than the sum of its proper divisors (274059709).

1066542659 is a wasteful number, since it uses less digits than its factorization.

1066542659 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249434.

The product of its (nonzero) digits is 388800, while the sum is 44.

The square root of 1066542659 is about 32657.9647100060. The cubic root of 1066542659 is about 1021.7063132216.

The spelling of 1066542659 in words is "one billion, sixty-six million, five hundred forty-two thousand, six hundred fifty-nine".