666707 has 2 divisors, whose sum is σ = 666708. Its totient is φ = 666706.

The previous prime is 666697. The next prime is 666727. The reversal of 666707 is 707666.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 666707 - 2⁶ = 666643 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (666727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333353 + 333354.

It is an arithmetic number, because the mean of its divisors is an integer number (333354).

2⁶⁶⁶⁷⁰⁷ is an apocalyptic number.

666707 is a deficient number, since it is larger than the sum of its proper divisors (1).

666707 is an equidigital number, since it uses as much as digits as its factorization.

666707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10584, while the sum is 32.

The square root of 666707 is about 816.5212795757. The cubic root of 666707 is about 87.3598081587.

The spelling of 666707 in words is "six hundred sixty-six thousand, seven hundred seven".