667106707 has 16 divisors (see below), whose sum is σ = 739163232. Its totient is φ = 599339520.

The previous prime is 667106683. The next prime is 667106711. The reversal of 667106707 is 707601766.

It is a cyclic number.

It is not a de Polignac number, because 667106707 - 2¹⁹ = 666582419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 667106707.

It is not an unprimeable number, because it can be changed into a prime (667106747) 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 15 ways as a sum of consecutive naturals, for example, 23332 + ... + 43342.

It is an arithmetic number, because the mean of its divisors is an integer number (46197702).

Almost surely, 2^667106707 is an apocalyptic number.

667106707 is a deficient number, since it is larger than the sum of its proper divisors (72056525).

667106707 is a wasteful number, since it uses less digits than its factorization.

667106707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20118.

The product of its (nonzero) digits is 74088, while the sum is 40.

The square root of 667106707 is about 25828.4089134426. The cubic root of 667106707 is about 873.7726277822.

The spelling of 667106707 in words is "six hundred sixty-seven million, one hundred six thousand, seven hundred seven".