667683193 has 4 divisors (see below), whose sum is σ = 672105088. Its totient is φ = 663261300.

The previous prime is 667683187. The next prime is 667683197. The reversal of 667683193 is 391386766.

667683193 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-667683193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (667683197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2210721 + ... + 2211022.

It is an arithmetic number, because the mean of its divisors is an integer number (168026272).

Almost surely, 2^667683193 is an apocalyptic number.

It is an amenable number.

667683193 is a deficient number, since it is larger than the sum of its proper divisors (4421895).

667683193 is a wasteful number, since it uses less digits than its factorization.

667683193 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4421894.

The product of its digits is 979776, while the sum is 49.

The square root of 667683193 is about 25839.5664243810. The cubic root of 667683193 is about 874.0242480273.

The spelling of 667683193 in words is "six hundred sixty-seven million, six hundred eighty-three thousand, one hundred ninety-three".