60721308 has 18 divisors (see below), whose sum is σ = 153490064. Its totient is φ = 20240424.

The previous prime is 60721307. The next prime is 60721319. The reversal of 60721308 is 80312706.

60721308 is a `hidden beast` number, since 607 + 21 + 30 + 8 = 666.

60721308 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60721303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 843316 + ... + 843387.

Almost surely, 2^60721308 is an apocalyptic number.

It is an amenable number.

60721308 is an abundant number, since it is smaller than the sum of its proper divisors (92768756).

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

60721308 is a wasteful number, since it uses less digits than its factorization.

60721308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1686713 (or 1686708 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 60721308 is about 7792.3878240242. The cubic root of 60721308 is about 393.0493110629.

The spelling of 60721308 in words is "sixty million, seven hundred twenty-one thousand, three hundred eight".