60686660 has 24 divisors (see below), whose sum is σ = 130887960. Its totient is φ = 23618304.

The previous prime is 60686629. The next prime is 60686663. The reversal of 60686660 is 6668606.

It can be written as a sum of positive squares in 4 ways, for example, as 33895684 + 26790976 = 5822^2 + 5176^2 .

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (60686663) 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, 40265 + ... + 41744.

It is an arithmetic number, because the mean of its divisors is an integer number (5453665).

Almost surely, 2^60686660 is an apocalyptic number.

It is an amenable number.

60686660 is an abundant number, since it is smaller than the sum of its proper divisors (70201300).

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

60686660 is a wasteful number, since it uses less digits than its factorization.

60686660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82055 (or 82053 counting only the distinct ones).

The product of its (nonzero) digits is 62208, while the sum is 38.

The square root of 60686660 is about 7790.1643114892. The cubic root of 60686660 is about 392.9745379503.

The spelling of 60686660 in words is "sixty million, six hundred eighty-six thousand, six hundred sixty".