66142867 has 8 divisors (see below), whose sum is σ = 75714912. Its totient is φ = 56601600.

The previous prime is 66142859. The next prime is 66142873. The reversal of 66142867 is 76824166.

66142867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 66142867 - 2³ = 66142859 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66142807) 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 7 ways as a sum of consecutive naturals, for example, 2884 + ... + 11857.

It is an arithmetic number, because the mean of its divisors is an integer number (9464364).

Almost surely, 2^66142867 is an apocalyptic number.

66142867 is a deficient number, since it is larger than the sum of its proper divisors (9572045).

66142867 is a wasteful number, since it uses less digits than its factorization.

66142867 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15389.

The product of its digits is 96768, while the sum is 40.

The square root of 66142867 is about 8132.8265074327. The cubic root of 66142867 is about 404.4153877915.

The spelling of 66142867 in words is "sixty-six million, one hundred forty-two thousand, eight hundred sixty-seven".