326540623 has 2 divisors, whose sum is σ = 326540624. Its totient is φ = 326540622.

The previous prime is 326540603. The next prime is 326540629. The reversal of 326540623 is 326045623.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-326540623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (326540629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163270311 + 163270312.

It is an arithmetic number, because the mean of its divisors is an integer number (163270312).

Almost surely, 2^326540623 is an apocalyptic number.

326540623 is a deficient number, since it is larger than the sum of its proper divisors (1).

326540623 is an equidigital number, since it uses as much as digits as its factorization.

326540623 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 31.

The square root of 326540623 is about 18070.4350528702. The cubic root of 326540623 is about 688.6191125487.

The spelling of 326540623 in words is "three hundred twenty-six million, five hundred forty thousand, six hundred twenty-three".