667702748 has 12 divisors (see below), whose sum is σ = 1174019112. Its totient is φ = 332268720.

The previous prime is 667702747. The next prime is 667702751. The reversal of 667702748 is 847207766.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667702747) by changing a digit.

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, 394715 + ... + 396402.

It is an arithmetic number, because the mean of its divisors is an integer number (97834926).

Almost surely, 2^667702748 is an apocalyptic number.

It is an amenable number.

667702748 is a deficient number, since it is larger than the sum of its proper divisors (506316364).

667702748 is a wasteful number, since it uses less digits than its factorization.

667702748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 791332 (or 791330 counting only the distinct ones).

The product of its (nonzero) digits is 790272, while the sum is 47.

The square root of 667702748 is about 25839.9448141826. The cubic root of 667702748 is about 874.0327807054.

The spelling of 667702748 in words is "six hundred sixty-seven million, seven hundred two thousand, seven hundred forty-eight".