624449 has 8 divisors (see below), whose sum is σ = 733248. Its totient is φ = 520560.

The previous prime is 624443. The next prime is 624451. The reversal of 624449 is 944426.

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 624449 - 2¹⁶ = 558913 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624443) 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, 947 + ... + 1464.

It is an arithmetic number, because the mean of its divisors is an integer number (91656).

2⁶²⁴⁴⁴⁹ is an apocalyptic number.

It is an amenable number.

624449 is a deficient number, since it is larger than the sum of its proper divisors (108799).

624449 is a wasteful number, since it uses less digits than its factorization.

624449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2455.

The product of its digits is 6912, while the sum is 29.

The square root of 624449 is about 790.2208552044. The cubic root of 624449 is about 85.4736647002.

The spelling of 624449 in words is "six hundred twenty-four thousand, four hundred forty-nine".