1326623 has 2 divisors, whose sum is σ = 1326624. Its totient is φ = 1326622.

The previous prime is 1326613. The next prime is 1326631. The reversal of 1326623 is 3266231.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1326623 - 2⁴ = 1326607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1326613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 663311 + 663312.

It is an arithmetic number, because the mean of its divisors is an integer number (663312).

2^1326623 is an apocalyptic number.

1326623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1326623 is an equidigital number, since it uses as much as digits as its factorization.

1326623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1296, while the sum is 23.

The square root of 1326623 is about 1151.7912137189. The cubic root of 1326623 is about 109.8792890713.

The spelling of 1326623 in words is "one million, three hundred twenty-six thousand, six hundred twenty-three".