63660 has 24 divisors (see below), whose sum is σ = 178416. Its totient is φ = 16960.

The previous prime is 63659. The next prime is 63667. The reversal of 63660 is 6636.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (63667) 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, 471 + ... + 590.

It is an arithmetic number, because the mean of its divisors is an integer number (7434).

2⁶³⁶⁶⁰ is an apocalyptic number.

63660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63660 is an abundant number, since it is smaller than the sum of its proper divisors (114756).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89208).

63660 is a wasteful number, since it uses less digits than its factorization.

63660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1073 (or 1071 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

The square root of 63660 is about 252.3093339534. The cubic root of 63660 is about 39.9290408611.

It can be divided in two parts, 636 and 60, that added together give a palindrome (696).

The spelling of 63660 in words is "sixty-three thousand, six hundred sixty".