623403163 has 4 divisors (see below), whose sum is σ = 624029440. Its totient is φ = 622776888.

The previous prime is 623403127. The next prime is 623403173. The reversal of 623403163 is 361304326.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 623403163 - 2¹³ = 623394971 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623403113) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311643 + ... + 313636.

It is an arithmetic number, because the mean of its divisors is an integer number (156007360).

Almost surely, 2^623403163 is an apocalyptic number.

623403163 is a deficient number, since it is larger than the sum of its proper divisors (626277).

623403163 is an equidigital number, since it uses as much as digits as its factorization.

623403163 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 626276.

The product of its (nonzero) digits is 7776, while the sum is 28.

The square root of 623403163 is about 24968.0428347918. The cubic root of 623403163 is about 854.2592049030.

Adding to 623403163 its reverse (361304326), we get a palindrome (984707489).

The spelling of 623403163 in words is "six hundred twenty-three million, four hundred three thousand, one hundred sixty-three".