623404326 has 32 divisors (see below), whose sum is σ = 1329062400. Its totient is φ = 194369760.

The previous prime is 623404321. The next prime is 623404337.

It is a happy number.

623404326 is nontrivially palindromic in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 623404293 and 623404302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623404321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25605 + ... + 43616.

It is an arithmetic number, because the mean of its divisors is an integer number (41533200).

Almost surely, 2^623404326 is an apocalyptic number.

623404326 is an abundant number, since it is smaller than the sum of its proper divisors (705658074).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

623404326 is a wasteful number, since it uses less digits than its factorization.

623404326 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69324.

The product of its (nonzero) digits is 20736, while the sum is 30.

The square root of 623404326 is about 24968.0661245520. The cubic root of 623404326 is about 854.2597361284.

It can be divided in two parts, 62340 and 4326, that added together give a palindrome (66666).

The spelling of 623404326 in words is "six hundred twenty-three million, four hundred four thousand, three hundred twenty-six".