667268072 has 16 divisors (see below), whose sum is σ = 1254285060. Its totient is φ = 332792064.

The previous prime is 667268057. The next prime is 667268099. The reversal of 667268072 is 270862766.

It can be written as a sum of positive squares in 2 ways, for example, as 655667236 + 11600836 = 25606^2 + 3406^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101873 + ... + 108224.

Almost surely, 2^667268072 is an apocalyptic number.

It is an amenable number.

667268072 is a deficient number, since it is larger than the sum of its proper divisors (587016988).

667268072 is a wasteful number, since it uses less digits than its factorization.

667268072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210500 (or 210496 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 667268072 is about 25831.5325135773. The cubic root of 667268072 is about 873.8430737602.

The spelling of 667268072 in words is "six hundred sixty-seven million, two hundred sixty-eight thousand, seventy-two".