326605997 has 2 divisors, whose sum is σ = 326605998. Its totient is φ = 326605996.

The previous prime is 326605973. The next prime is 326606009. The reversal of 326605997 is 799506623.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 297597001 + 29008996 = 17251^2 + 5386^2 .

It is a cyclic number.

It is not a de Polignac number, because 326605997 - 2¹⁰ = 326604973 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 (326605907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163302998 + 163302999.

It is an arithmetic number, because the mean of its divisors is an integer number (163302999).

Almost surely, 2^326605997 is an apocalyptic number.

It is an amenable number.

326605997 is a deficient number, since it is larger than the sum of its proper divisors (1).

326605997 is an equidigital number, since it uses as much as digits as its factorization.

326605997 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 612360, while the sum is 47.

The square root of 326605997 is about 18072.2438285897. The cubic root of 326605997 is about 688.6650637299.

The spelling of 326605997 in words is "three hundred twenty-six million, six hundred five thousand, nine hundred ninety-seven".