667371674 has 4 divisors (see below), whose sum is σ = 1001057514. Its totient is φ = 333685836.

The previous prime is 667371641. The next prime is 667371743. The reversal of 667371674 is 476173766.

667371674 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 476173766 = 2 ⋅238086883.

It can be written as a sum of positive squares in only one way, i.e., 455523649 + 211848025 = 21343^2 + 14555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166842917 + ... + 166842920.

Almost surely, 2^667371674 is an apocalyptic number.

667371674 is a deficient number, since it is larger than the sum of its proper divisors (333685840).

667371674 is a wasteful number, since it uses less digits than its factorization.

667371674 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333685839.

The product of its digits is 889056, while the sum is 47.

The square root of 667371674 is about 25833.5377755351. The cubic root of 667371674 is about 873.8882965669. Note that the first 3 decimals are identical.

The spelling of 667371674 in words is "six hundred sixty-seven million, three hundred seventy-one thousand, six hundred seventy-four".