667710744 has 64 divisors (see below), whose sum is σ = 1702208640. Its totient is φ = 218211840.

The previous prime is 667710733. The next prime is 667710793. The reversal of 667710744 is 447017766.

667710744 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 667710696 and 667710705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 386667 + ... + 388389.

It is an arithmetic number, because the mean of its divisors is an integer number (26597010).

Almost surely, 2^667710744 is an apocalyptic number.

It is an amenable number.

667710744 is an abundant number, since it is smaller than the sum of its proper divisors (1034497896).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

667710744 is a wasteful number, since it uses less digits than its factorization.

667710744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2040 (or 2036 counting only the distinct ones).

The product of its (nonzero) digits is 197568, while the sum is 42.

The square root of 667710744 is about 25840.0995354120. The cubic root of 667710744 is about 874.0362696523.

The spelling of 667710744 in words is "six hundred sixty-seven million, seven hundred ten thousand, seven hundred forty-four".