66671914 has 8 divisors (see below), whose sum is σ = 100942848. Its totient is φ = 33024300.

The previous prime is 66671881. The next prime is 66671929. The reversal of 66671914 is 41917666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 155562 + ... + 155989.

It is an arithmetic number, because the mean of its divisors is an integer number (12617856).

Almost surely, 2^66671914 is an apocalyptic number.

66671914 is a deficient number, since it is larger than the sum of its proper divisors (34270934).

66671914 is a wasteful number, since it uses less digits than its factorization.

66671914 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 311660.

The product of its digits is 54432, while the sum is 40.

The square root of 66671914 is about 8165.2871351839. The cubic root of 66671914 is about 405.4907712062.

The spelling of 66671914 in words is "sixty-six million, six hundred seventy-one thousand, nine hundred fourteen".