1967671 has 2 divisors, whose sum is σ = 1967672. Its totient is φ = 1967670.

The previous prime is 1967657. The next prime is 1967683. The reversal of 1967671 is 1767691.

It is a strong prime.

It is an emirp because it is prime and its reverse (1767691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1967671 - 2⁵ = 1967639 is a prime.

1967671 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1967671.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1967071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983835 + 983836.

It is an arithmetic number, because the mean of its divisors is an integer number (983836).

2^1967671 is an apocalyptic number.

1967671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1967671 is an equidigital number, since it uses as much as digits as its factorization.

1967671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15876, while the sum is 37.

The square root of 1967671 is about 1402.7369675032. The cubic root of 1967671 is about 125.3095474768.

The spelling of 1967671 in words is "one million, nine hundred sixty-seven thousand, six hundred seventy-one".