667334681474 has 8 divisors (see below), whose sum is σ = 1010912933628. Its totient is φ = 330363703600.

The previous prime is 667334681459. The next prime is 667334681477. The reversal of 667334681474 is 474186433766.

It can be written as a sum of positive squares in 2 ways, for example, as 494314455625 + 173020225849 = 703075^2 + 415957^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (667334681477) 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, 1651818317 + ... + 1651818720.

Almost surely, 2^667334681474 is an apocalyptic number.

667334681474 is a deficient number, since it is larger than the sum of its proper divisors (343578252154).

667334681474 is a wasteful number, since it uses less digits than its factorization.

667334681474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3303637140.

The product of its digits is 48771072, while the sum is 59.

The spelling of 667334681474 in words is "six hundred sixty-seven billion, three hundred thirty-four million, six hundred eighty-one thousand, four hundred seventy-four".