60640660 has 12 divisors (see below), whose sum is σ = 127345428. Its totient is φ = 24256256.

The previous prime is 60640651. The next prime is 60640663. The reversal of 60640660 is 6604606.

It can be written as a sum of positive squares in 2 ways, for example, as 13278736 + 47361924 = 3644^2 + 6882^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60640663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1515997 + ... + 1516036.

It is an arithmetic number, because the mean of its divisors is an integer number (10612119).

Almost surely, 2^60640660 is an apocalyptic number.

It is an amenable number.

60640660 is an abundant number, since it is smaller than the sum of its proper divisors (66704768).

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

60640660 is a wasteful number, since it uses less digits than its factorization.

60640660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3032042 (or 3032040 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 60640660 is about 7787.2113108609. The cubic root of 60640660 is about 392.8752223399.

The spelling of 60640660 in words is "sixty million, six hundred forty thousand, six hundred sixty".