667704274 has 16 divisors (see below), whose sum is σ = 1060973208. Its totient is φ = 314065152.

The previous prime is 667704269. The next prime is 667704277. The reversal of 667704274 is 472407766.

It can be written as a sum of positive squares in 4 ways, for example, as 666001249 + 1703025 = 25807^2 + 1305^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 667704274.

It is not an unprimeable number, because it can be changed into a prime (667704277) 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 7 ways as a sum of consecutive naturals, for example, 107584 + ... + 113620.

Almost surely, 2^667704274 is an apocalyptic number.

667704274 is a deficient number, since it is larger than the sum of its proper divisors (393268934).

667704274 is a wasteful number, since it uses less digits than its factorization.

667704274 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9309.

The product of its (nonzero) digits is 395136, while the sum is 43.

The square root of 667704274 is about 25839.9743420925. The cubic root of 667704274 is about 874.0334465571.

The spelling of 667704274 in words is "six hundred sixty-seven million, seven hundred four thousand, two hundred seventy-four".