26422621 has 2 divisors, whose sum is σ = 26422622. Its totient is φ = 26422620.

The previous prime is 26422609. The next prime is 26422637. The reversal of 26422621 is 12622462.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18610596 + 7812025 = 4314^2 + 2795^2 .

It is a cyclic number.

It is not a de Polignac number, because 26422621 - 2⁷ = 26422493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (26422691) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13211310 + 13211311.

It is an arithmetic number, because the mean of its divisors is an integer number (13211311).

Almost surely, 2^26422621 is an apocalyptic number.

It is an amenable number.

26422621 is a deficient number, since it is larger than the sum of its proper divisors (1).

26422621 is an equidigital number, since it uses as much as digits as its factorization.

26422621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 25.

The square root of 26422621 is about 5140.2938631950. The cubic root of 26422621 is about 297.8461324490.

The spelling of 26422621 in words is "twenty-six million, four hundred twenty-two thousand, six hundred twenty-one".