1782961 has 2 divisors, whose sum is σ = 1782962. Its totient is φ = 1782960.

The previous prime is 1782959. The next prime is 1782971. The reversal of 1782961 is 1692871.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1575025 + 207936 = 1255^2 + 456^2 .

It is an emirp because it is prime and its reverse (1692871) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1782961 - 2¹ = 1782959 is a prime.

Together with 1782959, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1782901) 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, 891480 + 891481.

It is an arithmetic number, because the mean of its divisors is an integer number (891481).

2^1782961 is an apocalyptic number.

It is an amenable number.

1782961 is a deficient number, since it is larger than the sum of its proper divisors (1).

1782961 is an equidigital number, since it uses as much as digits as its factorization.

1782961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6048, while the sum is 34.

The square root of 1782961 is about 1335.2756269774. The cubic root of 1782961 is about 121.2589903703.

The spelling of 1782961 in words is "one million, seven hundred eighty-two thousand, nine hundred sixty-one".