1021696 has 36 divisors (see below), whose sum is σ = 2203432. Its totient is φ = 470016.

The previous prime is 1021673. The next prime is 1021697. The reversal of 1021696 is 6961201.

1021696 is nontrivially palindromic in base 12.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1021696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1021697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3175 + ... + 3481.

2^1021696 is an apocalyptic number.

1021696 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 1021696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101716).

1021696 is an abundant number, since it is smaller than the sum of its proper divisors (1181736).

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

1021696 is an equidigital number, since it uses as much as digits as its factorization.

1021696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 322 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 1021696 is about 1010.7897902136. The cubic root of 1021696 is about 100.7180319612.

Adding to 1021696 its reverse (6961201), we get a palindrome (7982897).

The spelling of 1021696 in words is "one million, twenty-one thousand, six hundred ninety-six".