880643 has 4 divisors (see below), whose sum is σ = 911040. Its totient is φ = 850248.

The previous prime is 880603. The next prime is 880661. The reversal of 880643 is 346088.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-880643 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29), and also a Moran number because the ratio is a prime number: 30367 = 880643 / (8 + 8 + 0 + 6 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (880603) 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, 15155 + ... + 15212.

It is an arithmetic number, because the mean of its divisors is an integer number (227760).

2⁸⁸⁰⁶⁴³ is an apocalyptic number.

880643 is a deficient number, since it is larger than the sum of its proper divisors (30397).

880643 is a wasteful number, since it uses less digits than its factorization.

880643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30396.

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 880643 is about 938.4258095342. The cubic root of 880643 is about 95.8517314813.

The spelling of 880643 in words is "eight hundred eighty thousand, six hundred forty-three".