60728709 has 16 divisors (see below), whose sum is σ = 86242752. Its totient is φ = 37878528.

The previous prime is 60728677. The next prime is 60728711. The reversal of 60728709 is 90782706.

It is not a de Polignac number, because 60728709 - 2⁵ = 60728677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60728719) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5382 + ... + 12264.

It is an arithmetic number, because the mean of its divisors is an integer number (5390172).

Almost surely, 2^60728709 is an apocalyptic number.

It is an amenable number.

60728709 is a deficient number, since it is larger than the sum of its proper divisors (25514043).

60728709 is a wasteful number, since it uses less digits than its factorization.

60728709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7076.

The product of its (nonzero) digits is 42336, while the sum is 39.

The square root of 60728709 is about 7792.8626960829. The cubic root of 60728709 is about 393.0652793167.

The spelling of 60728709 in words is "sixty million, seven hundred twenty-eight thousand, seven hundred nine".