666073202 has 4 divisors (see below), whose sum is σ = 999109806. Its totient is φ = 333036600.

The previous prime is 666073201. The next prime is 666073273. The reversal of 666073202 is 202370666.

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

It can be written as a sum of positive squares in only one way, i.e., 440202361 + 225870841 = 20981^2 + 15029^2 .

It is not an unprimeable number, because it can be changed into a prime (666073201) 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 as a sum of consecutive naturals, namely, 166518299 + ... + 166518302.

Almost surely, 2^666073202 is an apocalyptic number.

666073202 is a deficient number, since it is larger than the sum of its proper divisors (333036604).

666073202 is a wasteful number, since it uses less digits than its factorization.

666073202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333036603.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 666073202 is about 25808.3940221006. The cubic root of 666073202 is about 873.3211682098.

The spelling of 666073202 in words is "six hundred sixty-six million, seventy-three thousand, two hundred two".