60109681 has 2 divisors, whose sum is σ = 60109682. Its totient is φ = 60109680.

The previous prime is 60109669. The next prime is 60109703. The reversal of 60109681 is 18690106.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 56927025 + 3182656 = 7545^2 + 1784^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60109681 is a prime.

It is a super-2 number, since 2×60109681² = 7226347499843522, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (60109601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30054840 + 30054841.

It is an arithmetic number, because the mean of its divisors is an integer number (30054841).

Almost surely, 2^60109681 is an apocalyptic number.

It is an amenable number.

60109681 is a deficient number, since it is larger than the sum of its proper divisors (1).

60109681 is an equidigital number, since it uses as much as digits as its factorization.

60109681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2592, while the sum is 31.

The square root of 60109681 is about 7753.0433379416. The cubic root of 60109681 is about 391.7251670175.

Adding to 60109681 its reverse (18690106), we get a palindrome (78799787).

The spelling of 60109681 in words is "sixty million, one hundred nine thousand, six hundred eighty-one".