60721647 has 16 divisors (see below), whose sum is σ = 92896512. Its totient is φ = 34560000.

The previous prime is 60721643. The next prime is 60721651. The reversal of 60721647 is 74612706.

It is an interprime number because it is at equal distance from previous prime (60721643) and next prime (60721651).

It is not a de Polignac number, because 60721647 - 2² = 60721643 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (60721643) 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 15 ways as a sum of consecutive naturals, for example, 229 + ... + 11022.

It is an arithmetic number, because the mean of its divisors is an integer number (5806032).

Almost surely, 2^60721647 is an apocalyptic number.

60721647 is a deficient number, since it is larger than the sum of its proper divisors (32174865).

60721647 is a wasteful number, since it uses less digits than its factorization.

60721647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11518.

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 60721647 is about 7792.4095759912. The cubic root of 60721647 is about 393.0500425110.

The spelling of 60721647 in words is "sixty million, seven hundred twenty-one thousand, six hundred forty-seven".