26877997 has 2 divisors, whose sum is σ = 26877998. Its totient is φ = 26877996.

The previous prime is 26877941. The next prime is 26878009. The reversal of 26877997 is 79977862.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22099401 + 4778596 = 4701^2 + 2186^2 .

It is a cyclic number.

It is not a de Polignac number, because 26877997 - 2¹⁵ = 26845229 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26877397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13438998 + 13438999.

It is an arithmetic number, because the mean of its divisors is an integer number (13438999).

Almost surely, 2^26877997 is an apocalyptic number.

It is an amenable number.

26877997 is a deficient number, since it is larger than the sum of its proper divisors (1).

26877997 is an equidigital number, since it uses as much as digits as its factorization.

26877997 is an evil number, because the sum of its binary digits is even.

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

The square root of 26877997 is about 5184.3993866214. The cubic root of 26877997 is about 299.5474547229.

The spelling of 26877997 in words is "twenty-six million, eight hundred seventy-seven thousand, nine hundred ninety-seven".