668007148 has 12 divisors (see below), whose sum is σ = 1170302112. Its totient is φ = 333635120.

The previous prime is 668007143. The next prime is 668007167. The reversal of 668007148 is 841700866.

It is a self number, because there is not a number n which added to its sum of digits gives 668007148.

It is not an unprimeable number, because it can be changed into a prime (668007143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88015 + ... + 95302.

It is an arithmetic number, because the mean of its divisors is an integer number (97525176).

Almost surely, 2^668007148 is an apocalyptic number.

It is an amenable number.

668007148 is a deficient number, since it is larger than the sum of its proper divisors (502294964).

668007148 is a wasteful number, since it uses less digits than its factorization.

668007148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 184232 (or 184230 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 40.

The square root of 668007148 is about 25845.8342484819. The cubic root of 668007148 is about 874.1655818951.

The spelling of 668007148 in words is "six hundred sixty-eight million, seven thousand, one hundred forty-eight".