667403670733 has 4 divisors (see below), whose sum is σ = 671132183040. Its totient is φ = 663675158428.

The previous prime is 667403670707. The next prime is 667403670793. The reversal of 667403670733 is 337076304766.

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-667403670733 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (667403670793) 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, 1864255885 + ... + 1864256242.

It is an arithmetic number, because the mean of its divisors is an integer number (167783045760).

Almost surely, 2^667403670733 is an apocalyptic number.

It is an amenable number.

667403670733 is a deficient number, since it is larger than the sum of its proper divisors (3728512307).

667403670733 is a wasteful number, since it uses less digits than its factorization.

667403670733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3728512306.

The product of its (nonzero) digits is 8001504, while the sum is 52.

The spelling of 667403670733 in words is "six hundred sixty-seven billion, four hundred three million, six hundred seventy thousand, seven hundred thirty-three".