668984202 has 12 divisors (see below), whose sum is σ = 1449465810. Its totient is φ = 222994728.

The previous prime is 668984177. The next prime is 668984207. The reversal of 668984202 is 202489866.

It can be written as a sum of positive squares in only one way, i.e., 637613001 + 31371201 = 25251^2 + 5601^2 .

It is not an unprimeable number, because it can be changed into a prime (668984207) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18582877 + ... + 18582912.

Almost surely, 2^668984202 is an apocalyptic number.

668984202 is an abundant number, since it is smaller than the sum of its proper divisors (780481608).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

668984202 is a wasteful number, since it uses less digits than its factorization.

668984202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37165797 (or 37165794 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 45.

The square root of 668984202 is about 25864.7289179686. The cubic root of 668984202 is about 874.5915707996.

The spelling of 668984202 in words is "six hundred sixty-eight million, nine hundred eighty-four thousand, two hundred two".