13721063 has 2 divisors, whose sum is σ = 13721064. Its totient is φ = 13721062.

The previous prime is 13721051. The next prime is 13721093. The reversal of 13721063 is 36012731.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 13721063 - 2⁴ = 13721047 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13721033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6860531 + 6860532.

It is an arithmetic number, because the mean of its divisors is an integer number (6860532).

Almost surely, 2^13721063 is an apocalyptic number.

13721063 is a deficient number, since it is larger than the sum of its proper divisors (1).

13721063 is an equidigital number, since it uses as much as digits as its factorization.

13721063 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 13721063 is about 3704.1953242236. The cubic root of 13721063 is about 239.4028150432.

Adding to 13721063 its reverse (36012731), we get a palindrome (49733794).

The spelling of 13721063 in words is "thirteen million, seven hundred twenty-one thousand, sixty-three".