667666733774 has 4 divisors (see below), whose sum is σ = 1001500100664. Its totient is φ = 333833366886.

The previous prime is 667666733711. The next prime is 667666733807. The reversal of 667666733774 is 477337666766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166916683442 + ... + 166916683445.

It is an arithmetic number, because the mean of its divisors is an integer number (250375025166).

Almost surely, 2^667666733774 is an apocalyptic number.

667666733774 is a deficient number, since it is larger than the sum of its proper divisors (333833366890).

667666733774 is a wasteful number, since it uses less digits than its factorization.

667666733774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333833366889.

The product of its digits is 672126336, while the sum is 68.

The spelling of 667666733774 in words is "six hundred sixty-seven billion, six hundred sixty-six million, seven hundred thirty-three thousand, seven hundred seventy-four".