326980639 has 2 divisors, whose sum is σ = 326980640. Its totient is φ = 326980638.

The previous prime is 326980559. The next prime is 326980697. The reversal of 326980639 is 936089623.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 326980639 - 2¹³ = 326972447 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326980039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163490319 + 163490320.

It is an arithmetic number, because the mean of its divisors is an integer number (163490320).

Almost surely, 2^326980639 is an apocalyptic number.

326980639 is a deficient number, since it is larger than the sum of its proper divisors (1).

326980639 is an equidigital number, since it uses as much as digits as its factorization.

326980639 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 419904, while the sum is 46.

The square root of 326980639 is about 18082.6059792277. The cubic root of 326980639 is about 688.9282802378.

The spelling of 326980639 in words is "three hundred twenty-six million, nine hundred eighty thousand, six hundred thirty-nine".