669067318 has 4 divisors (see below), whose sum is σ = 1003600980. Its totient is φ = 334533658.

The previous prime is 669067307. The next prime is 669067339. The reversal of 669067318 is 813760966.

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, 167266828 + ... + 167266831.

It is an arithmetic number, because the mean of its divisors is an integer number (250900245).

Almost surely, 2^669067318 is an apocalyptic number.

669067318 is a deficient number, since it is larger than the sum of its proper divisors (334533662).

669067318 is a wasteful number, since it uses less digits than its factorization.

669067318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334533661.

The product of its (nonzero) digits is 326592, while the sum is 46.

The square root of 669067318 is about 25866.3356121427. The cubic root of 669067318 is about 874.6277896632.

The spelling of 669067318 in words is "six hundred sixty-nine million, sixty-seven thousand, three hundred eighteen".