66841360 has 40 divisors (see below), whose sum is σ = 157965336. Its totient is φ = 26296320.

The previous prime is 66841349. The next prime is 66841361. The reversal of 66841360 is 6314866.

It can be written as a sum of positive squares in 4 ways, for example, as 5626384 + 61214976 = 2372^2 + 7824^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (66841361) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1969 + ... + 11728.

Almost surely, 2^66841360 is an apocalyptic number.

It is an amenable number.

66841360 is an abundant number, since it is smaller than the sum of its proper divisors (91123976).

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

66841360 is a wasteful number, since it uses less digits than its factorization.

66841360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771 (or 13765 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 66841360 is about 8175.6565485593. The cubic root of 66841360 is about 405.8339975094.

The spelling of 66841360 in words is "sixty-six million, eight hundred forty-one thousand, three hundred sixty".