326741621 has 2 divisors, whose sum is σ = 326741622. Its totient is φ = 326741620.

The previous prime is 326741593. The next prime is 326741627. The reversal of 326741621 is 126147623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 262116100 + 64625521 = 16190^2 + 8039^2 .

It is a cyclic number.

It is not a de Polignac number, because 326741621 - 2²² = 322547317 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326741627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163370810 + 163370811.

It is an arithmetic number, because the mean of its divisors is an integer number (163370811).

Almost surely, 2^326741621 is an apocalyptic number.

It is an amenable number.

326741621 is a deficient number, since it is larger than the sum of its proper divisors (1).

326741621 is an equidigital number, since it uses as much as digits as its factorization.

326741621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12096, while the sum is 32.

The square root of 326741621 is about 18075.9957125465. The cubic root of 326741621 is about 688.7603738654.

The spelling of 326741621 in words is "three hundred twenty-six million, seven hundred forty-one thousand, six hundred twenty-one".