60841981 has 2 divisors, whose sum is σ = 60841982. Its totient is φ = 60841980.

The previous prime is 60841973. The next prime is 60841987. The reversal of 60841981 is 18914806.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50537881 + 10304100 = 7109^2 + 3210^2 .

It is a cyclic number.

It is not a de Polignac number, because 60841981 - 2³ = 60841973 is a prime.

It is a super-2 number, since 2×60841981² = 7403493304008722, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 60841981.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60841987) 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 as a sum of consecutive naturals, namely, 30420990 + 30420991.

It is an arithmetic number, because the mean of its divisors is an integer number (30420991).

Almost surely, 2^60841981 is an apocalyptic number.

It is an amenable number.

60841981 is a deficient number, since it is larger than the sum of its proper divisors (1).

60841981 is an equidigital number, since it uses as much as digits as its factorization.

60841981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 60841981 is about 7800.1269861458. The cubic root of 60841981 is about 393.3095110696.

The spelling of 60841981 in words is "sixty million, eight hundred forty-one thousand, nine hundred eighty-one".