66051180 has 144 divisors (see below), whose sum is σ = 223604640. Its totient is φ = 16091136.

The previous prime is 66051143. The next prime is 66051191. The reversal of 66051180 is 8115066.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 680892 + ... + 680988.

It is an arithmetic number, because the mean of its divisors is an integer number (1552810).

Almost surely, 2^66051180 is an apocalyptic number.

66051180 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 66051180, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111802320).

66051180 is an abundant number, since it is smaller than the sum of its proper divisors (157553460).

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

66051180 is a wasteful number, since it uses less digits than its factorization.

66051180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 66051180 is about 8127.1877054735. The cubic root of 66051180 is about 404.2284350040.

The spelling of 66051180 in words is "sixty-six million, fifty-one thousand, one hundred eighty".