1656396 has 72 divisors (see below), whose sum is σ = 5011440. Its totient is φ = 471744.

The previous prime is 1656383. The next prime is 1656427. The reversal of 1656396 is 6936561.

1656396 is a `hidden beast` number, since 1 + 6 + 563 + 96 = 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 1656396.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5136 + ... + 5448.

2^1656396 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 1656396, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2505720).

1656396 is an abundant number, since it is smaller than the sum of its proper divisors (3355044).

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

1656396 is a wasteful number, since it uses less digits than its factorization.

1656396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 340 (or 325 counting only the distinct ones).

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

The square root of 1656396 is about 1287.0104894677. The cubic root of 1656396 is about 118.3190637205.

It can be divided in two parts, 165 and 6396, that added together give a 8-th power (6561 = 3⁸).

The spelling of 1656396 in words is "one million, six hundred fifty-six thousand, three hundred ninety-six".