200666623 has 12 divisors (see below), whose sum is σ = 214682832. Its totient is φ = 186916160.

The previous prime is 200666603. The next prime is 200666629. The reversal of 200666623 is 326666002.

It is not a de Polignac number, because 200666623 - 2⁹ = 200666111 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (200666629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 194118 + ... + 195148.

It is an arithmetic number, because the mean of its divisors is an integer number (17890236).

Almost surely, 2^200666623 is an apocalyptic number.

200666623 is a deficient number, since it is larger than the sum of its proper divisors (14016209).

200666623 is a wasteful number, since it uses less digits than its factorization.

200666623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1262 (or 1155 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 200666623 is about 14165.6846993006. The cubic root of 200666623 is about 585.4525662501.

The spelling of 200666623 in words is "two hundred million, six hundred sixty-six thousand, six hundred twenty-three".