326720001 has 8 divisors (see below), whose sum is σ = 435758464. Its totient is φ = 217747440.

The previous prime is 326719999. The next prime is 326720011. The reversal of 326720001 is 100027623.

It is a happy number.

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

It is not a de Polignac number, because 326720001 - 2¹ = 326719999 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 326720001.

It is not an unprimeable number, because it can be changed into a prime (326720011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3430 + ... + 25791.

It is an arithmetic number, because the mean of its divisors is an integer number (54469808).

Almost surely, 2^326720001 is an apocalyptic number.

It is an amenable number.

326720001 is a deficient number, since it is larger than the sum of its proper divisors (109038463).

326720001 is a wasteful number, since it uses less digits than its factorization.

326720001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32951.

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 326720001 is about 18075.3976719739. The cubic root of 326720001 is about 688.7451821188.

Adding to 326720001 its reverse (100027623), we get a palindrome (426747624).

The spelling of 326720001 in words is "three hundred twenty-six million, seven hundred twenty thousand, one".