1330656 has 48 divisors (see below), whose sum is σ = 3556224. Its totient is φ = 435584.

The previous prime is 1330649. The next prime is 1330691. The reversal of 1330656 is 6560331.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7885 + ... + 8051.

It is an arithmetic number, because the mean of its divisors is an integer number (74088).

2^1330656 is an apocalyptic number.

1330656 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 1330656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1778112).

1330656 is an abundant number, since it is smaller than the sum of its proper divisors (2225568).

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

1330656 is a wasteful number, since it uses less digits than its factorization.

1330656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 263 (or 255 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 1330656 is about 1153.5406364754. The cubic root of 1330656 is about 109.9905225994.

Adding to 1330656 its reverse (6560331), we get a palindrome (7890987).

The spelling of 1330656 in words is "one million, three hundred thirty thousand, six hundred fifty-six".