1956636 has 84 divisors (see below), whose sum is σ = 5692344. Its totient is φ = 583200.

The previous prime is 1956631. The next prime is 1956637. The reversal of 1956636 is 6366591.

1956636 is a `hidden beast` number, since 19 + 5 + 6 + 636 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 1956636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1956631) by changing a digit.

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 27 ways as a sum of consecutive naturals, for example, 32046 + ... + 32106.

It is an arithmetic number, because the mean of its divisors is an integer number (67766).

2^1956636 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 1956636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2846172).

1956636 is an abundant number, since it is smaller than the sum of its proper divisors (3735708).

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

1956636 is a wasteful number, since it uses less digits than its factorization.

1956636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94 (or 77 counting only the distinct ones).

The product of its digits is 29160, while the sum is 36.

The square root of 1956636 is about 1398.7980554748. The cubic root of 1956636 is about 125.0748564964.

The spelling of 1956636 in words is "one million, nine hundred fifty-six thousand, six hundred thirty-six".