624666426 has 16 divisors (see below), whose sum is σ = 1258871328. Its totient is φ = 206632400.

The previous prime is 624666421. The next prime is 624666431.

624666426 is nontrivially palindromic in base 10.

It is an interprime number because it is at equal distance from previous prime (624666421) and next prime (624666431).

It is a super-2 number, since 2×624666426² = 780416287543226952, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax 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, 396585 + ... + 398156.

It is an arithmetic number, because the mean of its divisors is an integer number (78679458).

Almost surely, 2^624666426 is an apocalyptic number.

624666426 is an abundant number, since it is smaller than the sum of its proper divisors (634204902).

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

624666426 is a wasteful number, since it uses less digits than its factorization.

624666426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 794877.

The product of its digits is 497664, while the sum is 42.

The square root of 624666426 is about 24993.3276295895. The cubic root of 624666426 is about 854.8358386651.

The spelling of 624666426 in words is "six hundred twenty-four million, six hundred sixty-six thousand, four hundred twenty-six".