66000039 has 8 divisors (see below), whose sum is σ = 100571520. Its totient is φ = 37714296.

The previous prime is 66000029. The next prime is 66000043. The reversal of 66000039 is 93000066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66000039 - 2⁵ = 66000007 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65999982 and 66000018.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66000029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1571409 + ... + 1571450.

It is an arithmetic number, because the mean of its divisors is an integer number (12571440).

Almost surely, 2^66000039 is an apocalyptic number.

66000039 is a deficient number, since it is larger than the sum of its proper divisors (34571481).

66000039 is a wasteful number, since it uses less digits than its factorization.

66000039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142869.

The product of its (nonzero) digits is 972, while the sum is 24.

The square root of 66000039 is about 8124.0408049197. The cubic root of 66000039 is about 404.1240816624.

The spelling of 66000039 in words is "sixty-six million, thirty-nine", and thus it is an aban number and an uban number.