624461 has 8 divisors (see below), whose sum is σ = 669240. Its totient is φ = 580608.

The previous prime is 624451. The next prime is 624467. The reversal of 624461 is 164426.

It is a happy number.

624461 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 155236 + 469225 = 394^2 + 685^2 .

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 624461 - 2¹⁰ = 623437 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1685 + ... + 2021.

It is an arithmetic number, because the mean of its divisors is an integer number (83655).

2⁶²⁴⁴⁶¹ is an apocalyptic number.

It is an amenable number.

624461 is a deficient number, since it is larger than the sum of its proper divisors (44779).

624461 is a wasteful number, since it uses less digits than its factorization.

624461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 463.

The product of its digits is 1152, while the sum is 23.

The square root of 624461 is about 790.2284479820. The cubic root of 624461 is about 85.4742122108.

Adding to 624461 its reverse (164426), we get a palindrome (788887).

The spelling of 624461 in words is "six hundred twenty-four thousand, four hundred sixty-one".