326569680 has 60 divisors (see below), whose sum is σ = 1096732260. Its totient is φ = 87085056.

The previous prime is 326569631. The next prime is 326569693. The reversal of 326569680 is 86965623.

It is a happy number.

326569680 is a `hidden beast` number, since 3 + 2 + 6 + 569 + 6 + 80 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 137452176 + 189117504 = 11724^2 + 13752^2 .

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 226065 + ... + 227504.

It is an arithmetic number, because the mean of its divisors is an integer number (18278871).

Almost surely, 2^326569680 is an apocalyptic number.

326569680 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

326569680 is an abundant number, since it is smaller than the sum of its proper divisors (770162580).

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

326569680 is a wasteful number, since it uses less digits than its factorization.

326569680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 453588 (or 453579 counting only the distinct ones).

The product of its (nonzero) digits is 466560, while the sum is 45.

The square root of 326569680 is about 18071.2390278033. The cubic root of 326569680 is about 688.6395373807.

The spelling of 326569680 in words is "three hundred twenty-six million, five hundred sixty-nine thousand, six hundred eighty".