2064421 has 2 divisors, whose sum is σ = 2064422. Its totient is φ = 2064420.

The previous prime is 2064389. The next prime is 2064427. The reversal of 2064421 is 1244602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1999396 + 65025 = 1414^2 + 255^2 .

It is a cyclic number.

It is not a de Polignac number, because 2064421 - 2⁵ = 2064389 is a prime.

2064421 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2064427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032210 + 1032211.

It is an arithmetic number, because the mean of its divisors is an integer number (1032211).

2^2064421 is an apocalyptic number.

It is an amenable number.

2064421 is a deficient number, since it is larger than the sum of its proper divisors (1).

2064421 is an equidigital number, since it uses as much as digits as its factorization.

2064421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 384, while the sum is 19.

The square root of 2064421 is about 1436.8093123306. The cubic root of 2064421 is about 127.3305913599.

It can be divided in two parts, 2064 and 421, that added together give a triangular number (2485 = T₇₀).

The spelling of 2064421 in words is "two million, sixty-four thousand, four hundred twenty-one".