326648643 has 8 divisors (see below), whose sum is σ = 449581056. Its totient is φ = 210741000.

The previous prime is 326648633. The next prime is 326648653. The reversal of 326648643 is 346846623.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (326648633) and next prime (326648653).

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

It is not a de Polignac number, because 326648643 - 2⁵ = 326648611 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 326648595 and 326648604.

It is not an unprimeable number, because it can be changed into a prime (326648633) 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, 1756083 + ... + 1756268.

It is an arithmetic number, because the mean of its divisors is an integer number (56197632).

Almost surely, 2^326648643 is an apocalyptic number.

326648643 is a deficient number, since it is larger than the sum of its proper divisors (122932413).

326648643 is a wasteful number, since it uses less digits than its factorization.

326648643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3512385.

The product of its digits is 497664, while the sum is 42.

The square root of 326648643 is about 18073.4236657032. The cubic root of 326648643 is about 688.6950361660.

The spelling of 326648643 in words is "three hundred twenty-six million, six hundred forty-eight thousand, six hundred forty-three".