66118874 has 8 divisors (see below), whose sum is σ = 100537140. Its totient is φ = 32606496.

The previous prime is 66118873. The next prime is 66118891. The reversal of 66118874 is 47881166.

It can be written as a sum of positive squares in 2 ways, for example, as 59059225 + 7059649 = 7685^2 + 2657^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66118873) 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, 226289 + ... + 226580.

Almost surely, 2^66118874 is an apocalyptic number.

66118874 is a deficient number, since it is larger than the sum of its proper divisors (34418266).

66118874 is a wasteful number, since it uses less digits than its factorization.

66118874 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 452944.

The product of its digits is 64512, while the sum is 41.

The square root of 66118874 is about 8131.3513022129. The cubic root of 66118874 is about 404.3664819793.

The spelling of 66118874 in words is "sixty-six million, one hundred eighteen thousand, eight hundred seventy-four".