668014148 has 12 divisors (see below), whose sum is σ = 1197537852. Its totient is φ = 325860480.

The previous prime is 668014147. The next prime is 668014157. The reversal of 668014148 is 841410866.

It can be written as a sum of positive squares in 2 ways, for example, as 276290884 + 391723264 = 16622^2 + 19792^2 .

It is not an unprimeable number, because it can be changed into a prime (668014147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2036465 + ... + 2036792.

It is an arithmetic number, because the mean of its divisors is an integer number (99794821).

Almost surely, 2^668014148 is an apocalyptic number.

It is an amenable number.

668014148 is a deficient number, since it is larger than the sum of its proper divisors (529523704).

668014148 is a wasteful number, since it uses less digits than its factorization.

668014148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073302 (or 4073300 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 668014148 is about 25845.9696664683. The cubic root of 668014148 is about 874.1686353244.

The spelling of 668014148 in words is "six hundred sixty-eight million, fourteen thousand, one hundred forty-eight".