26366621 has 2 divisors, whose sum is σ = 26366622. Its totient is φ = 26366620.

The previous prime is 26366603. The next prime is 26366633. The reversal of 26366621 is 12666362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24900100 + 1466521 = 4990^2 + 1211^2 .

It is a cyclic number.

It is not a de Polignac number, because 26366621 - 2¹⁴ = 26350237 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 (26365621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13183310 + 13183311.

It is an arithmetic number, because the mean of its divisors is an integer number (13183311).

Almost surely, 2^26366621 is an apocalyptic number.

It is an amenable number.

26366621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26366621 is an equidigital number, since it uses as much as digits as its factorization.

26366621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 32.

The square root of 26366621 is about 5134.8438145673. The cubic root of 26366621 is about 297.6355656431.

The spelling of 26366621 in words is "twenty-six million, three hundred sixty-six thousand, six hundred twenty-one".