623441 has 24 divisors (see below), whose sum is σ = 843264. Its totient is φ = 449280.

The previous prime is 623437. The next prime is 623477. The reversal of 623441 is 144326.

It is a happy number.

It is not a de Polignac number, because 623441 - 2² = 623437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (623401) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 20096 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (35136).

2⁶²³⁴⁴¹ is an apocalyptic number.

It is an amenable number.

623441 is a deficient number, since it is larger than the sum of its proper divisors (219823).

623441 is a wasteful number, since it uses less digits than its factorization.

623441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81 (or 68 counting only the distinct ones).

The product of its digits is 576, while the sum is 20.

The square root of 623441 is about 789.5828012311. The cubic root of 623441 is about 85.4276487433.

Adding to 623441 its reverse (144326), we get a palindrome (767767).

The spelling of 623441 in words is "six hundred twenty-three thousand, four hundred forty-one".