624668 has 12 divisors (see below), whose sum is σ = 1192632. Its totient is φ = 283920.

The previous prime is 624667. The next prime is 624683. The reversal of 624668 is 866426.

It is a happy number.

It is a super-2 number, since 2×624668² = 780420220448, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (624667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7055 + ... + 7142.

It is an arithmetic number, because the mean of its divisors is an integer number (99386).

2⁶²⁴⁶⁶⁸ is an apocalyptic number.

It is an amenable number.

624668 is a deficient number, since it is larger than the sum of its proper divisors (567964).

624668 is a wasteful number, since it uses less digits than its factorization.

624668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14212 (or 14210 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 624668 is about 790.3594119133. The cubic root of 624668 is about 85.4836556654.

The spelling of 624668 in words is "six hundred twenty-four thousand, six hundred sixty-eight".