2063921 has 2 divisors, whose sum is σ = 2063922. Its totient is φ = 2063920.

The previous prime is 2063917. The next prime is 2063933. The reversal of 2063921 is 1293602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1852321 + 211600 = 1361^2 + 460^2 .

It is a cyclic number.

It is not a de Polignac number, because 2063921 - 2² = 2063917 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2063021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1031960 + 1031961.

It is an arithmetic number, because the mean of its divisors is an integer number (1031961).

2^2063921 is an apocalyptic number.

It is an amenable number.

2063921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2063921 is an equidigital number, since it uses as much as digits as its factorization.

2063921 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2063921 is about 1436.6353051488. The cubic root of 2063921 is about 127.3203107637.

The spelling of 2063921 in words is "two million, sixty-three thousand, nine hundred twenty-one".