666727334 has 16 divisors (see below), whose sum is σ = 1230881568. Its totient is φ = 263760192.

The previous prime is 666727319. The next prime is 666727337. The reversal of 666727334 is 433727666.

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666727337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1831487 + ... + 1831850.

It is an arithmetic number, because the mean of its divisors is an integer number (76930098).

Almost surely, 2^666727334 is an apocalyptic number.

666727334 is a deficient number, since it is larger than the sum of its proper divisors (564154234).

666727334 is a wasteful number, since it uses less digits than its factorization.

666727334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3663359.

The product of its digits is 762048, while the sum is 44.

The square root of 666727334 is about 25821.0637658482. The cubic root of 666727334 is about 873.6069628312.

The spelling of 666727334 in words is "six hundred sixty-six million, seven hundred twenty-seven thousand, three hundred thirty-four".