66119279 has 4 divisors (see below), whose sum is σ = 66273120. Its totient is φ = 65965440.

The previous prime is 66119233. The next prime is 66119281. The reversal of 66119279 is 97291166.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66119279 - 2¹² = 66115183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66119219) 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 3 ways as a sum of consecutive naturals, for example, 76274 + ... + 77135.

It is an arithmetic number, because the mean of its divisors is an integer number (16568280).

Almost surely, 2^66119279 is an apocalyptic number.

66119279 is a deficient number, since it is larger than the sum of its proper divisors (153841).

66119279 is a wasteful number, since it uses less digits than its factorization.

66119279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153840.

The product of its digits is 40824, while the sum is 41.

The square root of 66119279 is about 8131.3762057846. The cubic root of 66119279 is about 404.3673076039.

The spelling of 66119279 in words is "sixty-six million, one hundred nineteen thousand, two hundred seventy-nine".