667334806 has 4 divisors (see below), whose sum is σ = 1001002212. Its totient is φ = 333667402.

The previous prime is 667334791. The next prime is 667334831. The reversal of 667334806 is 608433766.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 166833700 + ... + 166833703.

It is an arithmetic number, because the mean of its divisors is an integer number (250250553).

Almost surely, 2^667334806 is an apocalyptic number.

667334806 is a deficient number, since it is larger than the sum of its proper divisors (333667406).

667334806 is a wasteful number, since it uses less digits than its factorization.

667334806 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 333667405.

The product of its (nonzero) digits is 435456, while the sum is 43.

The square root of 667334806 is about 25832.8241971334. The cubic root of 667334806 is about 873.8722040314.

The spelling of 667334806 in words is "six hundred sixty-seven million, three hundred thirty-four thousand, eight hundred six".