66889334 has 8 divisors (see below), whose sum is σ = 100499520. Its totient is φ = 33389496.

The previous prime is 66889307. The next prime is 66889337. The reversal of 66889334 is 43398866.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66889337) 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, 26054 + ... + 28505.

It is an arithmetic number, because the mean of its divisors is an integer number (12562440).

Almost surely, 2^66889334 is an apocalyptic number.

66889334 is a deficient number, since it is larger than the sum of its proper divisors (33610186).

66889334 is a wasteful number, since it uses less digits than its factorization.

66889334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55174.

The product of its digits is 746496, while the sum is 47.

The square root of 66889334 is about 8178.5899762734. The cubic root of 66889334 is about 405.9310672683.

The spelling of 66889334 in words is "sixty-six million, eight hundred eighty-nine thousand, three hundred thirty-four".