624261 has 8 divisors (see below), whose sum is σ = 908064. Its totient is φ = 378320.

The previous prime is 624259. The next prime is 624271. The reversal of 624261 is 162426.

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 624261 - 2¹ = 624259 is a prime.

It is a super-2 number, since 2×624261² = 779403592242, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624241) 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, 9426 + ... + 9491.

It is an arithmetic number, because the mean of its divisors is an integer number (113508).

2⁶²⁴²⁶¹ is an apocalyptic number.

It is an amenable number.

624261 is a deficient number, since it is larger than the sum of its proper divisors (283803).

624261 is a wasteful number, since it uses less digits than its factorization.

624261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18931.

The product of its digits is 576, while the sum is 21.

The square root of 624261 is about 790.1018921633. The cubic root of 624261 is about 85.4650861176.

Adding to 624261 its reverse (162426), we get a palindrome (786687).

The spelling of 624261 in words is "six hundred twenty-four thousand, two hundred sixty-one".