668153 has 2 divisors, whose sum is σ = 668154. Its totient is φ = 668152.

The previous prime is 668141. The next prime is 668159. The reversal of 668153 is 351866.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 425104 + 243049 = 652^2 + 493^2 .

It is a cyclic number.

It is not a de Polignac number, because 668153 - 2⁶ = 668089 is a prime.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 668153.

It is not a weakly prime, because it can be changed into another prime (668159) by changing a digit.

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 as a sum of consecutive naturals, namely, 334076 + 334077.

It is an arithmetic number, because the mean of its divisors is an integer number (334077).

2⁶⁶⁸¹⁵³ is an apocalyptic number.

It is an amenable number.

668153 is a deficient number, since it is larger than the sum of its proper divisors (1).

668153 is an equidigital number, since it uses as much as digits as its factorization.

668153 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 668153 is about 817.4062637392. The cubic root of 668153 is about 87.4229198739.

The spelling of 668153 in words is "six hundred sixty-eight thousand, one hundred fifty-three".