603623 has 2 divisors, whose sum is σ = 603624. Its totient is φ = 603622.

The previous prime is 603613. The next prime is 603641. The reversal of 603623 is 326306.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 603623 - 2⁴ = 603607 is a prime.

It is a super-2 number, since 2×603623² = 728721452258, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 603595 and 603604.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 603623.

It is not a weakly prime, because it can be changed into another prime (603613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 301811 + 301812.

It is an arithmetic number, because the mean of its divisors is an integer number (301812).

2⁶⁰³⁶²³ is an apocalyptic number.

603623 is a deficient number, since it is larger than the sum of its proper divisors (1).

603623 is an equidigital number, since it uses as much as digits as its factorization.

603623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 603623 is about 776.9317859375. The cubic root of 603623 is about 84.5126902267.

Adding to 603623 its reverse (326306), we get a palindrome (929929).

The spelling of 603623 in words is "six hundred three thousand, six hundred twenty-three".