326972561 has 8 divisors (see below), whose sum is σ = 337685760. Its totient is φ = 316415968.

The previous prime is 326972551. The next prime is 326972609. The reversal of 326972561 is 165279623.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 326972561 - 2⁶ = 326972497 is a prime.

It is a super-2 number, since 2×326972561² = 213822111293797442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (326972521) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34901 + ... + 43266.

It is an arithmetic number, because the mean of its divisors is an integer number (42210720).

Almost surely, 2^326972561 is an apocalyptic number.

It is an amenable number.

326972561 is a deficient number, since it is larger than the sum of its proper divisors (10713199).

326972561 is an equidigital number, since it uses as much as digits as its factorization.

326972561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78303.

The product of its digits is 136080, while the sum is 41.

The square root of 326972561 is about 18082.3826140252. The cubic root of 326972561 is about 688.9226069065.

The spelling of 326972561 in words is "three hundred twenty-six million, nine hundred seventy-two thousand, five hundred sixty-one".