66126039 has 48 divisors (see below), whose sum is σ = 111103488. Its totient is φ = 34745088.

The previous prime is 66126029. The next prime is 66126043. The reversal of 66126039 is 93062166.

It is a happy number.

66126039 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 66126039 - 2⁷ = 66125911 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66126019) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 117172 + ... + 117734.

It is an arithmetic number, because the mean of its divisors is an integer number (2314656).

Almost surely, 2^66126039 is an apocalyptic number.

66126039 is a deficient number, since it is larger than the sum of its proper divisors (44977449).

66126039 is a wasteful number, since it uses less digits than its factorization.

66126039 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 66126039 is about 8131.7918689548. The cubic root of 66126039 is about 404.3810879006.

The spelling of 66126039 in words is "sixty-six million, one hundred twenty-six thousand, thirty-nine".