1326636 has 36 divisors (see below), whose sum is σ = 3435432. Its totient is φ = 431424.

The previous prime is 1326631. The next prime is 1326641. The reversal of 1326636 is 6366231.

1326636 is a `hidden beast` number, since 1 + 3 + 26 + 636 = 666.

It is an interprime number because it is at equal distance from previous prime (1326631) and next prime (1326641).

It is a tau number, because it is divible by the number of its divisors (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (1326631) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1120 + ... + 1976.

2^1326636 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1326636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1717716).

1326636 is an abundant number, since it is smaller than the sum of its proper divisors (2108796).

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

1326636 is a wasteful number, since it uses less digits than its factorization.

1326636 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 910 (or 905 counting only the distinct ones).

The product of its digits is 3888, while the sum is 27.

The square root of 1326636 is about 1151.7968570890. The cubic root of 1326636 is about 109.8796479841.

The spelling of 1326636 in words is "one million, three hundred twenty-six thousand, six hundred thirty-six".