624628 has 6 divisors (see below), whose sum is σ = 1093106. Its totient is φ = 312312.

The previous prime is 624607. The next prime is 624643. The reversal of 624628 is 826426.

It can be written as a sum of positive squares in only one way, i.e., 535824 + 88804 = 732^2 + 298^2 .

It is a junction number, because it is equal to n+sod(n) for n = 624596 and 624605.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 78075 + ... + 78082.

2⁶²⁴⁶²⁸ is an apocalyptic number.

It is an amenable number.

624628 is a deficient number, since it is larger than the sum of its proper divisors (468478).

624628 is a wasteful number, since it uses less digits than its factorization.

624628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156161 (or 156159 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 624628 is about 790.3341065651. The cubic root of 624628 is about 85.4818310059.

The spelling of 624628 in words is "six hundred twenty-four thousand, six hundred twenty-eight".