1964671 has 2 divisors, whose sum is σ = 1964672. Its totient is φ = 1964670.

The previous prime is 1964659. The next prime is 1964719. The reversal of 1964671 is 1764691.

It is a weak prime.

It is an emirp because it is prime and its reverse (1764691) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1964671 - 2⁹ = 1964159 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1961671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 982335 + 982336.

It is an arithmetic number, because the mean of its divisors is an integer number (982336).

2^1964671 is an apocalyptic number.

1964671 is a deficient number, since it is larger than the sum of its proper divisors (1).

1964671 is an equidigital number, since it uses as much as digits as its factorization.

1964671 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 34.

The square root of 1964671 is about 1401.6672215615. The cubic root of 1964671 is about 125.2458308871.

The spelling of 1964671 in words is "one million, nine hundred sixty-four thousand, six hundred seventy-one".