26987137 has 2 divisors, whose sum is σ = 26987138. Its totient is φ = 26987136.

The previous prime is 26987113. The next prime is 26987141. The reversal of 26987137 is 73178962.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18870336 + 8116801 = 4344^2 + 2849^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26987137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 26987093 and 26987102.

It is not a weakly prime, because it can be changed into another prime (26987167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13493568 + 13493569.

It is an arithmetic number, because the mean of its divisors is an integer number (13493569).

Almost surely, 2^26987137 is an apocalyptic number.

It is an amenable number.

26987137 is a deficient number, since it is larger than the sum of its proper divisors (1).

26987137 is an equidigital number, since it uses as much as digits as its factorization.

26987137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 127008, while the sum is 43.

The square root of 26987137 is about 5194.9145325020. The cubic root of 26987137 is about 299.9523516918.

The spelling of 26987137 in words is "twenty-six million, nine hundred eighty-seven thousand, one hundred thirty-seven".