1665467 has 2 divisors, whose sum is σ = 1665468. Its totient is φ = 1665466.

The previous prime is 1665451. The next prime is 1665479. The reversal of 1665467 is 7645661.

It is a strong prime.

It is an emirp because it is prime and its reverse (7645661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1665467 - 2⁴ = 1665451 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1665427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 832733 + 832734.

It is an arithmetic number, because the mean of its divisors is an integer number (832734).

2^1665467 is an apocalyptic number.

1665467 is a deficient number, since it is larger than the sum of its proper divisors (1).

1665467 is an equidigital number, since it uses as much as digits as its factorization.

1665467 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 35.

The square root of 1665467 is about 1290.5297361936. The cubic root of 1665467 is about 118.5346560793.

The spelling of 1665467 in words is "one million, six hundred sixty-five thousand, four hundred sixty-seven".