1623263 has 2 divisors, whose sum is σ = 1623264. Its totient is φ = 1623262.

The previous prime is 1623233. The next prime is 1623269. The reversal of 1623263 is 3623261.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1623263 - 2¹⁴ = 1606879 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623269) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811631 + 811632.

It is an arithmetic number, because the mean of its divisors is an integer number (811632).

2^1623263 is an apocalyptic number.

1623263 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623263 is an equidigital number, since it uses as much as digits as its factorization.

1623263 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 1623263 is about 1274.0733887810. The cubic root of 1623263 is about 117.5248295196.

The spelling of 1623263 in words is "one million, six hundred twenty-three thousand, two hundred sixty-three".