880644 has 12 divisors (see below), whose sum is σ = 2054864. Its totient is φ = 293544.

The previous prime is 880603. The next prime is 880661. The reversal of 880644 is 446088.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 13.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36682 + ... + 36705.

2⁸⁸⁰⁶⁴⁴ is an apocalyptic number.

It is an amenable number.

880644 is an abundant number, since it is smaller than the sum of its proper divisors (1174220).

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

880644 is a wasteful number, since it uses less digits than its factorization.

880644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73394 (or 73392 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 880644 is about 938.4263423413. The cubic root of 880644 is about 95.8517677623.

The spelling of 880644 in words is "eight hundred eighty thousand, six hundred forty-four".