60665539 has 8 divisors (see below), whose sum is σ = 66237120. Its totient is φ = 55103400.

The previous prime is 60665509. The next prime is 60665551. The reversal of 60665539 is 93556606.

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

It is not a de Polignac number, because 60665539 - 2⁷ = 60665411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60665509) 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, 22704 + ... + 25234.

It is an arithmetic number, because the mean of its divisors is an integer number (8279640).

Almost surely, 2^60665539 is an apocalyptic number.

60665539 is a deficient number, since it is larger than the sum of its proper divisors (5571581).

60665539 is a wasteful number, since it uses less digits than its factorization.

60665539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4721.

The product of its (nonzero) digits is 145800, while the sum is 40.

The square root of 60665539 is about 7788.8085738449. The cubic root of 60665539 is about 392.9289432056.

The spelling of 60665539 in words is "sixty million, six hundred sixty-five thousand, five hundred thirty-nine".