26974861 has 2 divisors, whose sum is σ = 26974862. Its totient is φ = 26974860.

The previous prime is 26974841. The next prime is 26974877. The reversal of 26974861 is 16847962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 17556100 + 9418761 = 4190^2 + 3069^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26974861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26974841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13487430 + 13487431.

It is an arithmetic number, because the mean of its divisors is an integer number (13487431).

Almost surely, 2^26974861 is an apocalyptic number.

It is an amenable number.

26974861 is a deficient number, since it is larger than the sum of its proper divisors (1).

26974861 is an equidigital number, since it uses as much as digits as its factorization.

26974861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 145152, while the sum is 43.

The square root of 26974861 is about 5193.7328579741. The cubic root of 26974861 is about 299.9068636810.

The spelling of 26974861 in words is "twenty-six million, nine hundred seventy-four thousand, eight hundred sixty-one".