1324621 has 2 divisors, whose sum is σ = 1324622. Its totient is φ = 1324620.

The previous prime is 1324619. The next prime is 1324627. The reversal of 1324621 is 1264231.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1022121 + 302500 = 1011^2 + 550^2 .

It is an emirp because it is prime and its reverse (1264231) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1324621 - 2¹ = 1324619 is a prime.

Together with 1324619, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1324627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 662310 + 662311.

It is an arithmetic number, because the mean of its divisors is an integer number (662311).

2^1324621 is an apocalyptic number.

It is an amenable number.

1324621 is a deficient number, since it is larger than the sum of its proper divisors (1).

1324621 is an equidigital number, since it uses as much as digits as its factorization.

1324621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 288, while the sum is 19.

The square root of 1324621 is about 1150.9218044681. The cubic root of 1324621 is about 109.8239884858.

Adding to 1324621 its reverse (1264231), we get a palindrome (2588852).

It can be divided in two parts, 132 and 4621, that added together give a triangular number (4753 = T₉₇).

The spelling of 1324621 in words is "one million, three hundred twenty-four thousand, six hundred twenty-one".