10366621 has 2 divisors, whose sum is σ = 10366622. Its totient is φ = 10366620.

The previous prime is 10366619. The next prime is 10366627. The reversal of 10366621 is 12666301.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7901721 + 2464900 = 2811^2 + 1570^2 .

It is a cyclic number.

It is not a de Polignac number, because 10366621 - 2¹ = 10366619 is a prime.

Together with 10366619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10366627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5183310 + 5183311.

It is an arithmetic number, because the mean of its divisors is an integer number (5183311).

Almost surely, 2^10366621 is an apocalyptic number.

It is an amenable number.

10366621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10366621 is an equidigital number, since it uses as much as digits as its factorization.

10366621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 10366621 is about 3219.7237459136. The cubic root of 10366621 is about 218.0448032371.

The spelling of 10366621 in words is "ten million, three hundred sixty-six thousand, six hundred twenty-one".