60013661 has 2 divisors, whose sum is σ = 60013662. Its totient is φ = 60013660.

The previous prime is 60013651. The next prime is 60013687. The reversal of 60013661 is 16631006.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 21808900 = 6181^2 + 4670^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-60013661 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (60013651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30006830 + 30006831.

It is an arithmetic number, because the mean of its divisors is an integer number (30006831).

Almost surely, 2^60013661 is an apocalyptic number.

It is an amenable number.

60013661 is a deficient number, since it is larger than the sum of its proper divisors (1).

60013661 is an equidigital number, since it uses as much as digits as its factorization.

60013661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 60013661 is about 7746.8484559852. The cubic root of 60013661 is about 391.5164735327.

Adding to 60013661 its reverse (16631006), we get a palindrome (76644667).

The spelling of 60013661 in words is "sixty million, thirteen thousand, six hundred sixty-one".