326488761 has 27 divisors (see below), whose sum is σ = 499297071. Its totient is φ = 205552944.

The previous prime is 326488759. The next prime is 326488763. The reversal of 326488761 is 167884623.

The square root of 326488761 is 18069.

It is a perfect power (a square), and thus also a powerful number.

It is an interprime number because it is at equal distance from previous prime (326488759) and next prime (326488763).

It can be written as a sum of positive squares in only one way, i.e., 18275625 + 308213136 = 4275^2 + 17556^2 .

It is not a de Polignac number, because 326488761 - 2¹ = 326488759 is a prime.

It is a super-2 number, since 2×326488761² = 213189822118630242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (326488763) 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 26 ways as a sum of consecutive naturals, for example, 1029775 + ... + 1030091.

Almost surely, 2^326488761 is an apocalyptic number.

326488761 is the 18069-th square number.

326488761 is the 9035-th centered octagonal number.

It is an amenable number.

326488761 is a deficient number, since it is larger than the sum of its proper divisors (172808310).

326488761 is an equidigital number, since it uses as much as digits as its factorization.

326488761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 339 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The cubic root of 326488761 is about 688.5826545475.

The spelling of 326488761 in words is "three hundred twenty-six million, four hundred eighty-eight thousand, seven hundred sixty-one".