66883918 has 8 divisors (see below), whose sum is σ = 103785480. Its totient is φ = 32288760.

The previous prime is 66883913. The next prime is 66883939. The reversal of 66883918 is 81938866.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66883913) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 576528 + ... + 576643.

It is an arithmetic number, because the mean of its divisors is an integer number (12973185).

Almost surely, 2^66883918 is an apocalyptic number.

66883918 is a deficient number, since it is larger than the sum of its proper divisors (36901562).

66883918 is a wasteful number, since it uses less digits than its factorization.

66883918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1153202.

The product of its digits is 497664, while the sum is 49.

The square root of 66883918 is about 8178.2588611513. The cubic root of 66883918 is about 405.9201109525.

The spelling of 66883918 in words is "sixty-six million, eight hundred eighty-three thousand, nine hundred eighteen".