879643 has 8 divisors (see below), whose sum is σ = 941120. Its totient is φ = 819720.

The previous prime is 879629. The next prime is 879649. The reversal of 879643 is 346978.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-879643 is a prime.

It is a Duffinian number.

879643 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (879649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 928 + ... + 1618.

It is an arithmetic number, because the mean of its divisors is an integer number (117640).

2⁸⁷⁹⁶⁴³ is an apocalyptic number.

879643 is a deficient number, since it is larger than the sum of its proper divisors (61477).

879643 is a wasteful number, since it uses less digits than its factorization.

879643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777.

The product of its digits is 36288, while the sum is 37.

The square root of 879643 is about 937.8928510230. The cubic root of 879643 is about 95.8154367757.

It can be divided in two parts, 87 and 9643, that added together give a triangular number (9730 = T₁₃₉).

The spelling of 879643 in words is "eight hundred seventy-nine thousand, six hundred forty-three".