326006721 has 16 divisors (see below), whose sum is σ = 484142400. Its totient is φ = 216811584.

The previous prime is 326006701. The next prime is 326006797. The reversal of 326006721 is 127600623.

It is a happy number.

326006721 is a `hidden beast` number, since 32 + 600 + 6 + 7 + 21 = 666.

It is not a de Polignac number, because 326006721 - 2²² = 321812417 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (326006701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3096 + ... + 25721.

It is an arithmetic number, because the mean of its divisors is an integer number (30258900).

Almost surely, 2^326006721 is an apocalyptic number.

It is an amenable number.

326006721 is a deficient number, since it is larger than the sum of its proper divisors (158135679).

326006721 is a wasteful number, since it uses less digits than its factorization.

326006721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29245 (or 29239 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 326006721 is about 18055.6562051896. The cubic root of 326006721 is about 688.2436047223.

The spelling of 326006721 in words is "three hundred twenty-six million, six thousand, seven hundred twenty-one".