667554148 has 12 divisors (see below), whose sum is σ = 1199793532. Its totient is φ = 324756000.

The previous prime is 667554131. The next prime is 667554149. The reversal of 667554148 is 841455766.

It can be written as a sum of positive squares in 2 ways, for example, as 454627684 + 212926464 = 21322^2 + 14592^2 .

It is a junction number, because it is equal to n+sod(n) for n = 667554098 and 667554107.

It is not an unprimeable number, because it can be changed into a prime (667554149) 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, 2255103 + ... + 2255398.

Almost surely, 2^667554148 is an apocalyptic number.

It is an amenable number.

667554148 is a deficient number, since it is larger than the sum of its proper divisors (532239384).

667554148 is a wasteful number, since it uses less digits than its factorization.

667554148 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510542 (or 4510540 counting only the distinct ones).

The product of its digits is 806400, while the sum is 46.

The square root of 667554148 is about 25837.0692610443. The cubic root of 667554148 is about 873.9679360282.

The spelling of 667554148 in words is "six hundred sixty-seven million, five hundred fifty-four thousand, one hundred forty-eight".