667670407338 has 32 divisors (see below), whose sum is σ = 1481425873920. Its totient is φ = 198895138160.

The previous prime is 667670407337. The next prime is 667670407367. The reversal of 667670407338 is 833704076766.

It is not an unprimeable number, because it can be changed into a prime (667670407337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85726770 + ... + 85734557.

It is an arithmetic number, because the mean of its divisors is an integer number (46294558560).

Almost surely, 2^667670407338 is an apocalyptic number.

667670407338 is an abundant number, since it is smaller than the sum of its proper divisors (813755466582).

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

667670407338 is a wasteful number, since it uses less digits than its factorization.

667670407338 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 171461402.

The product of its (nonzero) digits is 21337344, while the sum is 57.

The spelling of 667670407338 in words is "six hundred sixty-seven billion, six hundred seventy million, four hundred seven thousand, three hundred thirty-eight".