26961013 has 2 divisors, whose sum is σ = 26961014. Its totient is φ = 26961012.

The previous prime is 26961007. The next prime is 26961023. The reversal of 26961013 is 31016962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24423364 + 2537649 = 4942^2 + 1593^2 .

It is a cyclic number.

It is not a de Polignac number, because 26961013 - 2⁹ = 26960501 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26961023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13480506 + 13480507.

It is an arithmetic number, because the mean of its divisors is an integer number (13480507).

Almost surely, 2^26961013 is an apocalyptic number.

It is an amenable number.

26961013 is a deficient number, since it is larger than the sum of its proper divisors (1).

26961013 is an equidigital number, since it uses as much as digits as its factorization.

26961013 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 26961013 is about 5192.3995416378. The cubic root of 26961013 is about 299.8555341469.

Adding to 26961013 its reverse (31016962), we get a palindrome (57977975).

The spelling of 26961013 in words is "twenty-six million, nine hundred sixty-one thousand, thirteen".