667340373406 has 96 divisors (see below), whose sum is σ = 1214566488000. Its totient is φ = 273864019968.

The previous prime is 667340373367. The next prime is 667340373521. The reversal of 667340373406 is 604373043766.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a self number, because there is not a number n which added to its sum of digits gives 667340373406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 196911960 + ... + 196915348.

It is an arithmetic number, because the mean of its divisors is an integer number (12651734250).

Almost surely, 2^667340373406 is an apocalyptic number.

667340373406 is a deficient number, since it is larger than the sum of its proper divisors (547226114594).

667340373406 is a wasteful number, since it uses less digits than its factorization.

667340373406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3986 (or 3979 counting only the distinct ones).

The product of its (nonzero) digits is 4572288, while the sum is 49.

The spelling of 667340373406 in words is "six hundred sixty-seven billion, three hundred forty million, three hundred seventy-three thousand, four hundred six".