13020641 has 2 divisors, whose sum is σ = 13020642. Its totient is φ = 13020640.

The previous prime is 13020629. The next prime is 13020647. The reversal of 13020641 is 14602031.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10144225 + 2876416 = 3185^2 + 1696^2 .

It is a cyclic number.

It is not a de Polignac number, because 13020641 - 2⁶ = 13020577 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (13020647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6510320 + 6510321.

It is an arithmetic number, because the mean of its divisors is an integer number (6510321).

Almost surely, 2^13020641 is an apocalyptic number.

It is an amenable number.

13020641 is a deficient number, since it is larger than the sum of its proper divisors (1).

13020641 is an equidigital number, since it uses as much as digits as its factorization.

13020641 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 13020641 is about 3608.4125318483. The cubic root of 13020641 is about 235.2578488619.

Adding to 13020641 its reverse (14602031), we get a palindrome (27622672).

The spelling of 13020641 in words is "thirteen million, twenty thousand, six hundred forty-one".