7605421 has 2 divisors, whose sum is σ = 7605422. Its totient is φ = 7605420.

The previous prime is 7605413. The next prime is 7605427. The reversal of 7605421 is 1245067.

7605421 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6702921 + 902500 = 2589^2 + 950^2 .

It is an emirp because it is prime and its reverse (1245067) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7605421 - 2³ = 7605413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7605427) 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, 3802710 + 3802711.

It is an arithmetic number, because the mean of its divisors is an integer number (3802711).

Almost surely, 2^7605421 is an apocalyptic number.

It is an amenable number.

7605421 is a deficient number, since it is larger than the sum of its proper divisors (1).

7605421 is an equidigital number, since it uses as much as digits as its factorization.

7605421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1680, while the sum is 25.

The square root of 7605421 is about 2757.7927768417. The cubic root of 7605421 is about 196.6562498872.

The spelling of 7605421 in words is "seven million, six hundred five thousand, four hundred twenty-one".