26980981 has 2 divisors, whose sum is σ = 26980982. Its totient is φ = 26980980.

The previous prime is 26980963. The next prime is 26980999. The reversal of 26980981 is 18908962.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (26980963) and next prime (26980999).

It can be written as a sum of positive squares in only one way, i.e., 17089956 + 9891025 = 4134^2 + 3145^2 .

It is a cyclic number.

It is not a de Polignac number, because 26980981 - 2¹³ = 26972789 is a prime.

It is a super-2 number, since 2×26980981² = 1455946671444722, which contains 22 as substring.

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, 13490490 + 13490491.

It is an arithmetic number, because the mean of its divisors is an integer number (13490491).

Almost surely, 2^26980981 is an apocalyptic number.

It is an amenable number.

26980981 is a deficient number, since it is larger than the sum of its proper divisors (1).

26980981 is an equidigital number, since it uses as much as digits as its factorization.

26980981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 43.

The square root of 26980981 is about 5194.3219961801. The cubic root of 26980981 is about 299.9295427131.

The spelling of 26980981 in words is "twenty-six million, nine hundred eighty thousand, nine hundred eighty-one".