623605066 has 24 divisors (see below), whose sum is σ = 1091304900. Its totient is φ = 266478912.

The previous prime is 623605063. The next prime is 623605069. The reversal of 623605066 is 660506326.

623605066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (623605063) and next prime (623605069).

It can be written as a sum of positive squares in 2 ways, for example, as 601279441 + 22325625 = 24521^2 + 4725^2 .

It is not an unprimeable number, because it can be changed into a prime (623605063) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25086 + ... + 43318.

Almost surely, 2^623605066 is an apocalyptic number.

623605066 is a deficient number, since it is larger than the sum of its proper divisors (467699834).

623605066 is a wasteful number, since it uses less digits than its factorization.

623605066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18598 (or 18591 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 34.

The square root of 623605066 is about 24972.0857358772. The cubic root of 623605066 is about 854.3514185723.

The spelling of 623605066 in words is "six hundred twenty-three million, six hundred five thousand, sixty-six".