66620160 has 108 divisors (see below), whose sum is σ = 230538672. Its totient is φ = 17762304.

The previous prime is 66620159. The next prime is 66620189. The reversal of 66620160 is 6102666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8629 + ... + 14411.

Almost surely, 2^66620160 is an apocalyptic number.

66620160 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66620160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115269336).

66620160 is an abundant number, since it is smaller than the sum of its proper divisors (163918512).

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

66620160 is a wasteful number, since it uses less digits than its factorization.

66620160 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5810 (or 5793 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 66620160 is about 8162.1173723489. The cubic root of 66620160 is about 405.3858234578.

The spelling of 66620160 in words is "sixty-six million, six hundred twenty thousand, one hundred sixty".