264403 has 2 divisors, whose sum is σ = 264404. Its totient is φ = 264402.

The previous prime is 264391. The next prime is 264437. The reversal of 264403 is 304462.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 264403 - 2⁵ = 264371 is a prime.

It is a d-powerful number, because it can be written as 2 + 6 + 4³ + 4⁹ + 0 + 3⁷ .

It is not a weakly prime, because it can be changed into another prime (264443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 132201 + 132202.

It is an arithmetic number, because the mean of its divisors is an integer number (132202).

2²⁶⁴⁴⁰³ is an apocalyptic number.

264403 is a deficient number, since it is larger than the sum of its proper divisors (1).

264403 is an equidigital number, since it uses as much as digits as its factorization.

264403 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 264403 is about 514.2013224409. The cubic root of 264403 is about 64.1833123360.

Adding to 264403 its reverse (304462), we get a palindrome (568865).

The spelling of 264403 in words is "two hundred sixty-four thousand, four hundred three".