60665561 has 8 divisors (see below), whose sum is σ = 67720224. Its totient is φ = 53867520.

The previous prime is 60665557. The next prime is 60665567. The reversal of 60665561 is 16556606.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 60665561 - 2² = 60665557 is a prime.

It is not an unprimeable number, because it can be changed into a prime (60665567) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63656 + ... + 64601.

It is an arithmetic number, because the mean of its divisors is an integer number (8465028).

Almost surely, 2^60665561 is an apocalyptic number.

It is an amenable number.

60665561 is a deficient number, since it is larger than the sum of its proper divisors (7054663).

60665561 is a wasteful number, since it uses less digits than its factorization.

60665561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128311.

The product of its (nonzero) digits is 32400, while the sum is 35.

The square root of 60665561 is about 7788.8099861275. The cubic root of 60665561 is about 392.9289907034.

The spelling of 60665561 in words is "sixty million, six hundred sixty-five thousand, five hundred sixty-one".