11626421 has 2 divisors, whose sum is σ = 11626422. Its totient is φ = 11626420.

The previous prime is 11626409. The next prime is 11626427. The reversal of 11626421 is 12462611.

11626421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8940100 + 2686321 = 2990^2 + 1639^2 .

It is a cyclic number.

It is not a de Polignac number, because 11626421 - 2⁶ = 11626357 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11626427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5813210 + 5813211.

It is an arithmetic number, because the mean of its divisors is an integer number (5813211).

Almost surely, 2^11626421 is an apocalyptic number.

It is an amenable number.

11626421 is a deficient number, since it is larger than the sum of its proper divisors (1).

11626421 is an equidigital number, since it uses as much as digits as its factorization.

11626421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 11626421 is about 3409.7538034292. The cubic root of 11626421 is about 226.5419746225.

The spelling of 11626421 in words is "eleven million, six hundred twenty-six thousand, four hundred twenty-one".