326427664 has 10 divisors (see below), whose sum is σ = 632453630. Its totient is φ = 163213824.

The previous prime is 326427631. The next prime is 326427667. The reversal of 326427664 is 466724623.

326427664 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 288728064 + 37699600 = 16992^2 + 6140^2 .

It is not an unprimeable number, because it can be changed into a prime (326427667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10200849 + ... + 10200880.

It is an arithmetic number, because the mean of its divisors is an integer number (63245363).

Almost surely, 2^326427664 is an apocalyptic number.

It is an amenable number.

326427664 is a deficient number, since it is larger than the sum of its proper divisors (306025966).

326427664 is a wasteful number, since it uses less digits than its factorization.

326427664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20401737 (or 20401731 counting only the distinct ones).

The product of its digits is 290304, while the sum is 40.

The square root of 326427664 is about 18067.3092628648. The cubic root of 326427664 is about 688.5396995631.

The spelling of 326427664 in words is "three hundred twenty-six million, four hundred twenty-seven thousand, six hundred sixty-four".