26980111 has 2 divisors, whose sum is σ = 26980112. Its totient is φ = 26980110.

The previous prime is 26980103. The next prime is 26980123. The reversal of 26980111 is 11108962.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 26980111 - 2³ = 26980103 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 26980111.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26980181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13490055 + 13490056.

It is an arithmetic number, because the mean of its divisors is an integer number (13490056).

Almost surely, 2^26980111 is an apocalyptic number.

26980111 is a deficient number, since it is larger than the sum of its proper divisors (1).

26980111 is an equidigital number, since it uses as much as digits as its factorization.

26980111 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 28.

The square root of 26980111 is about 5194.2382502153. The cubic root of 26980111 is about 299.9263189422.

The spelling of 26980111 in words is "twenty-six million, nine hundred eighty thousand, one hundred eleven".