667774312 has 16 divisors (see below), whose sum is σ = 1269712800. Its totient is φ = 329184240.

The previous prime is 667774309. The next prime is 667774319. The reversal of 667774312 is 213477766.

It is not an unprimeable number, because it can be changed into a prime (667774319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 587262 + ... + 588397.

It is an arithmetic number, because the mean of its divisors is an integer number (79357050).

Almost surely, 2^667774312 is an apocalyptic number.

It is an amenable number.

667774312 is a deficient number, since it is larger than the sum of its proper divisors (601938488).

667774312 is a wasteful number, since it uses less digits than its factorization.

667774312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1175736 (or 1175732 counting only the distinct ones).

The product of its digits is 296352, while the sum is 43.

The square root of 667774312 is about 25841.3295323596. The cubic root of 667774312 is about 874.0640057017.

The spelling of 667774312 in words is "six hundred sixty-seven million, seven hundred seventy-four thousand, three hundred twelve".