26871641 has 2 divisors, whose sum is σ = 26871642. Its totient is φ = 26871640.

The previous prime is 26871631. The next prime is 26871653. The reversal of 26871641 is 14617862.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24403600 + 2468041 = 4940^2 + 1571^2 .

It is a cyclic number.

It is not a de Polignac number, because 26871641 - 2¹⁸ = 26609497 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26871631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13435820 + 13435821.

It is an arithmetic number, because the mean of its divisors is an integer number (13435821).

Almost surely, 2^26871641 is an apocalyptic number.

It is an amenable number.

26871641 is a deficient number, since it is larger than the sum of its proper divisors (1).

26871641 is an equidigital number, since it uses as much as digits as its factorization.

26871641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 35.

The square root of 26871641 is about 5183.7863574804. The cubic root of 26871641 is about 299.5238409380.

The spelling of 26871641 in words is "twenty-six million, eight hundred seventy-one thousand, six hundred forty-one".