1326862660 has 24 divisors (see below), whose sum is σ = 2788695000. Its totient is φ = 530310144.

The previous prime is 1326862637. The next prime is 1326862679. The reversal of 1326862660 is 662686231.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 369331524 + 957531136 = 19218^2 + 30944^2 .

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 1579 + ... + 51538.

It is an arithmetic number, because the mean of its divisors is an integer number (116195625).

Almost surely, 2^1326862660 is an apocalyptic number.

1326862660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1326862660 is an abundant number, since it is smaller than the sum of its proper divisors (1461832340).

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

1326862660 is a wasteful number, since it uses less digits than its factorization.

1326862660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54375 (or 54373 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 40.

The square root of 1326862660 is about 36426.1260635824. The cubic root of 1326862660 is about 1098.8590539074.

The spelling of 1326862660 in words is "one billion, three hundred twenty-six million, eight hundred sixty-two thousand, six hundred sixty".