60724698721 has 4 divisors (see below), whose sum is σ = 60725223700. Its totient is φ = 60724173744.

The previous prime is 60724698707. The next prime is 60724698731. The reversal of 60724698721 is 12789642706.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 39099525696 + 21625173025 = 197736^2 + 147055^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60724698721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60724698731) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4386 + ... + 348523.

It is an arithmetic number, because the mean of its divisors is an integer number (15181305925).

Almost surely, 2^60724698721 is an apocalyptic number.

It is an amenable number.

60724698721 is a deficient number, since it is larger than the sum of its proper divisors (524979).

60724698721 is a wasteful number, since it uses less digits than its factorization.

60724698721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524978.

The product of its (nonzero) digits is 2032128, while the sum is 52.

The spelling of 60724698721 in words is "sixty billion, seven hundred twenty-four million, six hundred ninety-eight thousand, seven hundred twenty-one".