1966607 has 2 divisors, whose sum is σ = 1966608. Its totient is φ = 1966606.

The previous prime is 1966603. The next prime is 1966619. The reversal of 1966607 is 7066691.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1966607 - 2² = 1966603 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1966603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983303 + 983304.

It is an arithmetic number, because the mean of its divisors is an integer number (983304).

2^1966607 is an apocalyptic number.

1966607 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966607 is an equidigital number, since it uses as much as digits as its factorization.

1966607 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1966607 is about 1402.3576576608. The cubic root of 1966607 is about 125.2869567425.

The spelling of 1966607 in words is "one million, nine hundred sixty-six thousand, six hundred seven".