1326706668 has 96 divisors (see below), whose sum is σ = 3936952320. Its totient is φ = 378483840.

The previous prime is 1326706663. The next prime is 1326706727. The reversal of 1326706668 is 8666076231.

It is not an unprimeable number, because it can be changed into a prime (1326706663) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 901173 + ... + 902643.

It is an arithmetic number, because the mean of its divisors is an integer number (41009920).

Almost surely, 2^1326706668 is an apocalyptic number.

1326706668 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326706668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1968476160).

1326706668 is an abundant number, since it is smaller than the sum of its proper divisors (2610245652).

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

1326706668 is a wasteful number, since it uses less digits than its factorization.

1326706668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2684 (or 2676 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 45.

The square root of 1326706668 is about 36423.9847902450. The cubic root of 1326706668 is about 1098.8159899329.

The spelling of 1326706668 in words is "one billion, three hundred twenty-six million, seven hundred six thousand, six hundred sixty-eight".