668036 has 6 divisors (see below), whose sum is σ = 1169070. Its totient is φ = 334016.

The previous prime is 668033. The next prime is 668047. The reversal of 668036 is 630866.

It can be written as a sum of positive squares in only one way, i.e., 372100 + 295936 = 610^2 + 544^2 .

It is not an unprimeable number, because it can be changed into a prime (668033) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83501 + ... + 83508.

It is an arithmetic number, because the mean of its divisors is an integer number (194845).

2⁶⁶⁸⁰³⁶ is an apocalyptic number.

It is an amenable number.

668036 is a deficient number, since it is larger than the sum of its proper divisors (501034).

668036 is a wasteful number, since it uses less digits than its factorization.

668036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167013 (or 167011 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 668036 is about 817.3346927667. The cubic root of 668036 is about 87.4178167121.

The spelling of 668036 in words is "six hundred sixty-eight thousand, thirty-six".