66761360 has 40 divisors (see below), whose sum is σ = 156466176. Its totient is φ = 26490240.

The previous prime is 66761353. The next prime is 66761411. The reversal of 66761360 is 6316766.

It is a happy number.

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

It is a self number, because there is not a number n which added to its sum of digits gives 66761360.

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, 6875 + ... + 13445.

Almost surely, 2^66761360 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66761360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (78233088).

66761360 is an abundant number, since it is smaller than the sum of its proper divisors (89704816).

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

66761360 is a wasteful number, since it uses less digits than its factorization.

66761360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6711 (or 6705 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 66761360 is about 8170.7625103169. The cubic root of 66761360 is about 405.6720235401.

The spelling of 66761360 in words is "sixty-six million, seven hundred sixty-one thousand, three hundred sixty".