1063921 has 2 divisors, whose sum is σ = 1063922. Its totient is φ = 1063920.

The previous prime is 1063919. The next prime is 1063927. The reversal of 1063921 is 1293601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 703921 + 360000 = 839^2 + 600^2 .

It is a cyclic number.

It is not a de Polignac number, because 1063921 - 2¹ = 1063919 is a prime.

It is a super-2 number, since 2×1063921² = 2263855788482, which contains 22 as substring.

Together with 1063919, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 1063892 and 1063901.

It is not a weakly prime, because it can be changed into another prime (1063927) 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, 531960 + 531961.

It is an arithmetic number, because the mean of its divisors is an integer number (531961).

2^1063921 is an apocalyptic number.

It is an amenable number.

1063921 is a deficient number, since it is larger than the sum of its proper divisors (1).

1063921 is an equidigital number, since it uses as much as digits as its factorization.

1063921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1063921 is about 1031.4654623399. The cubic root of 1063921 is about 102.0868477294.

The spelling of 1063921 in words is "one million, sixty-three thousand, nine hundred twenty-one".