60721218 has 32 divisors (see below), whose sum is σ = 138587520. Its totient is φ = 19692720.

The previous prime is 60721211. The next prime is 60721231. The reversal of 60721218 is 81212706.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 60721191 and 60721200.

It is not an unprimeable number, because it can be changed into a prime (60721211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13198 + ... + 17193.

It is an arithmetic number, because the mean of its divisors is an integer number (4330860).

Almost surely, 2^60721218 is an apocalyptic number.

60721218 is an abundant number, since it is smaller than the sum of its proper divisors (77866302).

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

60721218 is a wasteful number, since it uses less digits than its factorization.

60721218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30439 (or 30433 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 60721218 is about 7792.3820491554. The cubic root of 60721218 is about 393.0491168726.

The spelling of 60721218 in words is "sixty million, seven hundred twenty-one thousand, two hundred eighteen".