624666428 has 24 divisors (see below), whose sum is σ = 1168301232. Its totient is φ = 291209984.

The previous prime is 624666421. The next prime is 624666431. The reversal of 624666428 is 824666426.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624666421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35651 + ... + 50202.

It is an arithmetic number, because the mean of its divisors is an integer number (48679218).

Almost surely, 2^624666428 is an apocalyptic number.

624666428 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

624666428 is a deficient number, since it is larger than the sum of its proper divisors (543634804).

624666428 is a wasteful number, since it uses less digits than its factorization.

624666428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85981 (or 85979 counting only the distinct ones).

The product of its digits is 663552, while the sum is 44.

The square root of 624666428 is about 24993.3276696001. The cubic root of 624666428 is about 854.8358395774.

The spelling of 624666428 in words is "six hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-eight".