1396656 has 80 divisors (see below), whose sum is σ = 4151520. Its totient is φ = 449280.

The previous prime is 1396627. The next prime is 1396657. The reversal of 1396656 is 6566931.

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 1396656.

It is not an unprimeable number, because it can be changed into a prime (1396657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22866 + ... + 22926.

It is an arithmetic number, because the mean of its divisors is an integer number (51894).

2^1396656 is an apocalyptic number.

1396656 is a gapful number since it is divisible by the number (16) 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 1396656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2075760).

1396656 is an abundant number, since it is smaller than the sum of its proper divisors (2754864).

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

1396656 is a wasteful number, since it uses less digits than its factorization.

1396656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131 (or 119 counting only the distinct ones).

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

The square root of 1396656 is about 1181.8020138754. The cubic root of 1396656 is about 111.7797542499.

It can be divided in two parts, 13 and 96656, that added together give a palindrome (96669).

The spelling of 1396656 in words is "one million, three hundred ninety-six thousand, six hundred fifty-six".