623411 has 4 divisors (see below), whose sum is σ = 627312. Its totient is φ = 619512.

The previous prime is 623401. The next prime is 623417. The reversal of 623411 is 114326.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114326 = 2 ⋅57163.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-623411 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 623411.

It is not an unprimeable number, because it can be changed into a prime (623417) 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, 1700 + ... + 2033.

It is an arithmetic number, because the mean of its divisors is an integer number (156828).

2⁶²³⁴¹¹ is an apocalyptic number.

623411 is a deficient number, since it is larger than the sum of its proper divisors (3901).

623411 is a wasteful number, since it uses less digits than its factorization.

623411 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3900.

The product of its digits is 144, while the sum is 17.

The square root of 623411 is about 789.5638036283. The cubic root of 623411 is about 85.4262784610.

Adding to 623411 its reverse (114326), we get a palindrome (737737).

The spelling of 623411 in words is "six hundred twenty-three thousand, four hundred eleven".