4619621 has 2 divisors, whose sum is σ = 4619622. Its totient is φ = 4619620.

The previous prime is 4619609. The next prime is 4619623. The reversal of 4619621 is 1269164.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2402500 + 2217121 = 1550^2 + 1489^2 .

It is a cyclic number.

It is not a de Polignac number, because 4619621 - 2⁶ = 4619557 is a prime.

Together with 4619623, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4619623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2309810 + 2309811.

It is an arithmetic number, because the mean of its divisors is an integer number (2309811).

Almost surely, 2^4619621 is an apocalyptic number.

It is an amenable number.

4619621 is a deficient number, since it is larger than the sum of its proper divisors (1).

4619621 is an equidigital number, since it uses as much as digits as its factorization.

4619621 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2592, while the sum is 29.

The square root of 4619621 is about 2149.3303608333. The cubic root of 4619621 is about 166.5464764578.

The spelling of 4619621 in words is "four million, six hundred nineteen thousand, six hundred twenty-one".