60721387 has 2 divisors, whose sum is σ = 60721388. Its totient is φ = 60721386.

The previous prime is 60721379. The next prime is 60721391. The reversal of 60721387 is 78312706.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 60721387 - 2³ = 60721379 is a prime.

It is not a weakly prime, because it can be changed into another prime (60721307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30360693 + 30360694.

It is an arithmetic number, because the mean of its divisors is an integer number (30360694).

Almost surely, 2^60721387 is an apocalyptic number.

60721387 is a deficient number, since it is larger than the sum of its proper divisors (1).

60721387 is an equidigital number, since it uses as much as digits as its factorization.

60721387 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14112, while the sum is 34.

The square root of 60721387 is about 7792.3928930721. The cubic root of 60721387 is about 393.0494815186.

The spelling of 60721387 in words is "sixty million, seven hundred twenty-one thousand, three hundred eighty-seven".