66173882 has 8 divisors (see below), whose sum is σ = 102683700. Its totient is φ = 31945984.

The previous prime is 66173879. The next prime is 66173897. The reversal of 66173882 is 28837166.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 62710561 + 3463321 = 7919^2 + 1861^2 .

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, 570407 + ... + 570522.

Almost surely, 2^66173882 is an apocalyptic number.

66173882 is a deficient number, since it is larger than the sum of its proper divisors (36509818).

66173882 is a wasteful number, since it uses less digits than its factorization.

66173882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1140960.

The product of its digits is 96768, while the sum is 41.

The square root of 66173882 is about 8134.7330626149. The cubic root of 66173882 is about 404.4785892816.

The spelling of 66173882 in words is "sixty-six million, one hundred seventy-three thousand, eight hundred eighty-two".