1668202 has 8 divisors (see below), whose sum is σ = 2513412. Its totient is φ = 830400.

The previous prime is 1668197. The next prime is 1668211. The reversal of 1668202 is 2028661.

It can be written as a sum of positive squares in 2 ways, for example, as 1666681 + 1521 = 1291^2 + 39^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1249 + ... + 2212.

2^1668202 is an apocalyptic number.

1668202 is a deficient number, since it is larger than the sum of its proper divisors (845210).

1668202 is a wasteful number, since it uses less digits than its factorization.

1668202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3704.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1668202 is about 1291.5889438982. The cubic root of 1668202 is about 118.5995057551.

The spelling of 1668202 in words is "one million, six hundred sixty-eight thousand, two hundred two".