612666203 has 4 divisors (see below), whose sum is σ = 639303888. Its totient is φ = 586028520.

The previous prime is 612666199. The next prime is 612666221. The reversal of 612666203 is 302666216.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 612666203 - 2² = 612666199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 612666203.

It is not an unprimeable number, because it can be changed into a prime (612666233) by changing a digit.

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, 13318808 + ... + 13318853.

It is an arithmetic number, because the mean of its divisors is an integer number (159825972).

Almost surely, 2^612666203 is an apocalyptic number.

612666203 is a deficient number, since it is larger than the sum of its proper divisors (26637685).

612666203 is a wasteful number, since it uses less digits than its factorization.

612666203 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26637684.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 612666203 is about 24752.0949214405. The cubic root of 612666203 is about 849.3264343226.

The spelling of 612666203 in words is "six hundred twelve million, six hundred sixty-six thousand, two hundred three".