1966507 has 2 divisors, whose sum is σ = 1966508. Its totient is φ = 1966506.

The previous prime is 1966499. The next prime is 1966511. The reversal of 1966507 is 7056691.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1966507 - 2³ = 1966499 is a prime.

It is not a weakly prime, because it can be changed into another prime (1966597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983253 + 983254.

It is an arithmetic number, because the mean of its divisors is an integer number (983254).

2^1966507 is an apocalyptic number.

1966507 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966507 is an equidigital number, since it uses as much as digits as its factorization.

1966507 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

The square root of 1966507 is about 1402.3220029651. The cubic root of 1966507 is about 125.2848331344.

The spelling of 1966507 in words is "one million, nine hundred sixty-six thousand, five hundred seven".