880639 has 8 divisors (see below), whose sum is σ = 923328. Its totient is φ = 839040.

The previous prime is 880603. The next prime is 880661. The reversal of 880639 is 936088.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 880639 - 2⁹ = 880127 is a prime.

It is a Duffinian number.

880639 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (880699) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1699 + ... + 2155.

It is an arithmetic number, because the mean of its divisors is an integer number (115416).

2⁸⁸⁰⁶³⁹ is an apocalyptic number.

880639 is a deficient number, since it is larger than the sum of its proper divisors (42689).

880639 is a wasteful number, since it uses less digits than its factorization.

880639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 545.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 880639 is about 938.4236783031. The cubic root of 880639 is about 95.8515863573.

The spelling of 880639 in words is "eight hundred eighty thousand, six hundred thirty-nine".