624648 has 32 divisors (see below), whose sum is σ = 1654560. Its totient is φ = 195840.

The previous prime is 624643. The next prime is 624649. The reversal of 624648 is 846426.

It is a nude number because it is divisible by every one of its digits.

624648 is a modest number, since divided by 648 gives 624 as remainder.

It is not an unprimeable number, because it can be changed into a prime (624643) by changing a digit.

624648 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 358 + ... + 1173.

It is an arithmetic number, because the mean of its divisors is an integer number (51705).

2⁶²⁴⁶⁴⁸ is an apocalyptic number.

624648 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

624648 is an abundant number, since it is smaller than the sum of its proper divisors (1029912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

624648 is a wasteful number, since it uses less digits than its factorization.

624648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557 (or 1553 counting only the distinct ones).

The product of its digits is 9216, while the sum is 30.

The square root of 624648 is about 790.3467593405. The cubic root of 624648 is about 85.4827433454.

The spelling of 624648 in words is "six hundred twenty-four thousand, six hundred forty-eight".