66617882 has 8 divisors (see below), whose sum is σ = 100022016. Its totient is φ = 33277212.

The previous prime is 66617869. The next prime is 66617909. The reversal of 66617882 is 28871666.

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, 13148 + ... + 17495.

It is an arithmetic number, because the mean of its divisors is an integer number (12502752).

Almost surely, 2^66617882 is an apocalyptic number.

66617882 is a deficient number, since it is larger than the sum of its proper divisors (33404134).

66617882 is a wasteful number, since it uses less digits than its factorization.

66617882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31732.

The product of its digits is 193536, while the sum is 44.

The square root of 66617882 is about 8161.9778240326. The cubic root of 66617882 is about 405.3812028373.

The spelling of 66617882 in words is "sixty-six million, six hundred seventeen thousand, eight hundred eighty-two".