66110660 has 48 divisors (see below), whose sum is σ = 173093760. Its totient is φ = 20605440.

The previous prime is 66110647. The next prime is 66110677. The reversal of 66110660 is 6601166.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19925 + ... + 23004.

It is an arithmetic number, because the mean of its divisors is an integer number (3606120).

Almost surely, 2^66110660 is an apocalyptic number.

It is an amenable number.

66110660 is an abundant number, since it is smaller than the sum of its proper divisors (106983100).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66110660 is a wasteful number, since it uses less digits than its factorization.

66110660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42956 (or 42954 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 66110660 is about 8130.8462044242. The cubic root of 66110660 is about 404.3497363633.

It can be divided in two parts, 661106 and 60, that added together give a palindrome (661166).

The spelling of 66110660 in words is "sixty-six million, one hundred ten thousand, six hundred sixty".