3420653 has 2 divisors, whose sum is σ = 3420654. Its totient is φ = 3420652.

The previous prime is 3420649. The next prime is 3420667. The reversal of 3420653 is 3560243.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2301289 + 1119364 = 1517^2 + 1058^2 .

It is a cyclic number.

It is not a de Polignac number, because 3420653 - 2² = 3420649 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3420253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1710326 + 1710327.

It is an arithmetic number, because the mean of its divisors is an integer number (1710327).

Almost surely, 2^3420653 is an apocalyptic number.

It is an amenable number.

3420653 is a deficient number, since it is larger than the sum of its proper divisors (1).

3420653 is an equidigital number, since it uses as much as digits as its factorization.

3420653 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2160, while the sum is 23.

The square root of 3420653 is about 1849.5007434440. The cubic root of 3420653 is about 150.6733138747.

Adding to 3420653 its reverse (3560243), we get a palindrome (6980896).

The spelling of 3420653 in words is "three million, four hundred twenty thousand, six hundred fifty-three".