60665040 has 120 divisors (see below), whose sum is σ = 205868520. Its totient is φ = 16008192.

The previous prime is 60665023. The next prime is 60665051. The reversal of 60665040 is 4056606.

60665040 is a `hidden beast` number, since 6 + 0 + 6 + 650 + 4 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 1498176 + 59166864 = 1224^2 + 7692^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a junction number, because it is equal to n+sod(n) for n = 60664995 and 60665013.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 78094 + ... + 78866.

It is an arithmetic number, because the mean of its divisors is an integer number (1715571).

Almost surely, 2^60665040 is an apocalyptic number.

60665040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 60665040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (102934260).

60665040 is an abundant number, since it is smaller than the sum of its proper divisors (145203480).

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

60665040 is a wasteful number, since it uses less digits than its factorization.

60665040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901 (or 892 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

The square root of 60665040 is about 7788.7765406385. The cubic root of 60665040 is about 392.9278658665.

The spelling of 60665040 in words is "sixty million, six hundred sixty-five thousand, forty".