623344136 has 16 divisors (see below), whose sum is σ = 1170042300. Its totient is φ = 311332864.

The previous prime is 623344129. The next prime is 623344147. The reversal of 623344136 is 631443326.

It can be written as a sum of positive squares in 2 ways, for example, as 443944900 + 179399236 = 21070^2 + 13394^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34505 + ... + 49368.

Almost surely, 2^623344136 is an apocalyptic number.

It is an amenable number.

623344136 is a deficient number, since it is larger than the sum of its proper divisors (546698164).

623344136 is a wasteful number, since it uses less digits than its factorization.

623344136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84808 (or 84804 counting only the distinct ones).

The product of its digits is 31104, while the sum is 32.

The square root of 623344136 is about 24966.8607558099. The cubic root of 623344136 is about 854.2322421750.

The spelling of 623344136 in words is "six hundred twenty-three million, three hundred forty-four thousand, one hundred thirty-six".