326666466 has 64 divisors (see below), whose sum is σ = 833414400. Its totient is φ = 92907648.

The previous prime is 326666453. The next prime is 326666467. The reversal of 326666466 is 664666623.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (326666467) 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 31 ways as a sum of consecutive naturals, for example, 86220 + ... + 89928.

It is an arithmetic number, because the mean of its divisors is an integer number (13022100).

Almost surely, 2^326666466 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 326666466, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (416707200).

326666466 is an abundant number, since it is smaller than the sum of its proper divisors (506747934).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

326666466 is a wasteful number, since it uses less digits than its factorization.

326666466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3960 (or 3954 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 45.

The square root of 326666466 is about 18073.9167310243. The cubic root of 326666466 is about 688.7075617432.

The spelling of 326666466 in words is "three hundred twenty-six million, six hundred sixty-six thousand, four hundred sixty-six".