26997629 has 2 divisors, whose sum is σ = 26997630. Its totient is φ = 26997628.

The previous prime is 26997623. The next prime is 26997643. The reversal of 26997629 is 92679962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26988025 + 9604 = 5195^2 + 98^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26997629 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26997623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13498814 + 13498815.

It is an arithmetic number, because the mean of its divisors is an integer number (13498815).

Almost surely, 2^26997629 is an apocalyptic number.

It is an amenable number.

26997629 is a deficient number, since it is larger than the sum of its proper divisors (1).

26997629 is an equidigital number, since it uses as much as digits as its factorization.

26997629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 734832, while the sum is 50.

The square root of 26997629 is about 5195.9242681163. The cubic root of 26997629 is about 299.9912182615.

The spelling of 26997629 in words is "twenty-six million, nine hundred ninety-seven thousand, six hundred twenty-nine".