326506387 has 2 divisors, whose sum is σ = 326506388. Its totient is φ = 326506386.

The previous prime is 326506373. The next prime is 326506391. The reversal of 326506387 is 783605623.

It is a strong prime.

It is an emirp because it is prime and its reverse (783605623) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326506387 is a prime.

It is not a weakly prime, because it can be changed into another prime (326506307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163253193 + 163253194.

It is an arithmetic number, because the mean of its divisors is an integer number (163253194).

Almost surely, 2^326506387 is an apocalyptic number.

326506387 is a deficient number, since it is larger than the sum of its proper divisors (1).

326506387 is an equidigital number, since it uses as much as digits as its factorization.

326506387 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 40.

The square root of 326506387 is about 18069.4877348529. The cubic root of 326506387 is about 688.5950457239.

The spelling of 326506387 in words is "three hundred twenty-six million, five hundred six thousand, three hundred eighty-seven".