666740367 has 6 divisors (see below), whose sum is σ = 963069432. Its totient is φ = 444493572.

The previous prime is 666740299. The next prime is 666740429. The reversal of 666740367 is 763047666.

It is not a de Polignac number, because 666740367 - 2¹⁰ = 666739343 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (666741367) 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 5 ways as a sum of consecutive naturals, for example, 37041123 + ... + 37041140.

It is an arithmetic number, because the mean of its divisors is an integer number (160511572).

Almost surely, 2^666740367 is an apocalyptic number.

666740367 is a deficient number, since it is larger than the sum of its proper divisors (296329065).

666740367 is a wasteful number, since it uses less digits than its factorization.

666740367 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74082269 (or 74082266 counting only the distinct ones).

The product of its (nonzero) digits is 762048, while the sum is 45.

The square root of 666740367 is about 25821.3161360919. The cubic root of 666740367 is about 873.6126551358.

The spelling of 666740367 in words is "six hundred sixty-six million, seven hundred forty thousand, three hundred sixty-seven".