624478 has 8 divisors (see below), whose sum is σ = 991872. Its totient is φ = 293856.

The previous prime is 624469. The next prime is 624479. The reversal of 624478 is 874426.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9150 + ... + 9217.

It is an arithmetic number, because the mean of its divisors is an integer number (123984).

2⁶²⁴⁴⁷⁸ is an apocalyptic number.

624478 is a deficient number, since it is larger than the sum of its proper divisors (367394).

624478 is a wasteful number, since it uses less digits than its factorization.

624478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18386.

The product of its digits is 10752, while the sum is 31.

The square root of 624478 is about 790.2392042920. The cubic root of 624478 is about 85.4749878389.

The spelling of 624478 in words is "six hundred twenty-four thousand, four hundred seventy-eight".