624161 has 8 divisors (see below), whose sum is σ = 648000. Its totient is φ = 600880.

The previous prime is 624149. The next prime is 624163. The reversal of 624161 is 161426.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 624161 - 2⁶ = 624097 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 14.

It is a nialpdrome in base 16.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 624161.

It is not an unprimeable number, because it can be changed into a prime (624163) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4115 + ... + 4263.

It is an arithmetic number, because the mean of its divisors is an integer number (81000).

2⁶²⁴¹⁶¹ is an apocalyptic number.

It is an amenable number.

624161 is a deficient number, since it is larger than the sum of its proper divisors (23839).

624161 is a wasteful number, since it uses less digits than its factorization.

624161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279.

The product of its digits is 288, while the sum is 20.

The square root of 624161 is about 790.0386066516. The cubic root of 624161 is about 85.4605223401.

Adding to 624161 its reverse (161426), we get a palindrome (785587).

The spelling of 624161 in words is "six hundred twenty-four thousand, one hundred sixty-one".