66616160 has 48 divisors (see below), whose sum is σ = 169492176. Its totient is φ = 24595968.

The previous prime is 66616139. The next prime is 66616171. The reversal of 66616160 is 6161666.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13934 + ... + 18093.

It is an arithmetic number, because the mean of its divisors is an integer number (3531087).

Almost surely, 2^66616160 is an apocalyptic number.

It is an amenable number.

66616160 is an abundant number, since it is smaller than the sum of its proper divisors (102876016).

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

66616160 is a wasteful number, since it uses less digits than its factorization.

66616160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32055 (or 32047 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 32.

The square root of 66616160 is about 8161.8723342135. The cubic root of 66616160 is about 405.3777099190.

It can be divided in two parts, 6661 and 6160, that added together give a palindrome (12821).

The spelling of 66616160 in words is "sixty-six million, six hundred sixteen thousand, one hundred sixty".