26987977 has 2 divisors, whose sum is σ = 26987978. Its totient is φ = 26987976.

The previous prime is 26987953. The next prime is 26987981. The reversal of 26987977 is 77978962.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18113536 + 8874441 = 4256^2 + 2979^2 .

It is a cyclic number.

It is not a de Polignac number, because 26987977 - 2¹¹ = 26985929 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26987377) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13493988 + 13493989.

It is an arithmetic number, because the mean of its divisors is an integer number (13493989).

Almost surely, 2^26987977 is an apocalyptic number.

It is an amenable number.

26987977 is a deficient number, since it is larger than the sum of its proper divisors (1).

26987977 is an equidigital number, since it uses as much as digits as its factorization.

26987977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2667168, while the sum is 55.

The square root of 26987977 is about 5194.9953801712. The cubic root of 26987977 is about 299.9554637591.

The spelling of 26987977 in words is "twenty-six million, nine hundred eighty-seven thousand, nine hundred seventy-seven".