668598148 has 12 divisors (see below), whose sum is σ = 1189878480. Its totient is φ = 328632872.

The previous prime is 668598143. The next prime is 668598157. The reversal of 668598148 is 841895866.

It is not an unprimeable number, because it can be changed into a prime (668598143) 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 3 ways as a sum of consecutive naturals, for example, 1416286 + ... + 1416757.

It is an arithmetic number, because the mean of its divisors is an integer number (99156540).

Almost surely, 2^668598148 is an apocalyptic number.

It is an amenable number.

668598148 is a deficient number, since it is larger than the sum of its proper divisors (521280332).

668598148 is a wasteful number, since it uses less digits than its factorization.

668598148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2833106 (or 2833104 counting only the distinct ones).

The product of its digits is 3317760, while the sum is 55.

The square root of 668598148 is about 25857.2648978967. The cubic root of 668598148 is about 874.4233034763.

It can be divided in two parts, 668598 and 148, that added together give a triangular number (668746 = T₁₁₅₆).

The spelling of 668598148 in words is "six hundred sixty-eight million, five hundred ninety-eight thousand, one hundred forty-eight".