879865647 has 8 divisors (see below), whose sum is σ = 1192386480. Its totient is φ = 576960960.

The previous prime is 879865639. The next prime is 879865663. The reversal of 879865647 is 746568978.

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

It is not a de Polignac number, because 879865647 - 2³ = 879865639 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (879865747) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2403822 + ... + 2404187.

It is an arithmetic number, because the mean of its divisors is an integer number (149048310).

Almost surely, 2^879865647 is an apocalyptic number.

879865647 is a deficient number, since it is larger than the sum of its proper divisors (312520833).

879865647 is a wasteful number, since it uses less digits than its factorization.

879865647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808073.

The product of its digits is 20321280, while the sum is 60.

The square root of 879865647 is about 29662.5293425898. The cubic root of 879865647 is about 958.2352006250.

The spelling of 879865647 in words is "eight hundred seventy-nine million, eight hundred sixty-five thousand, six hundred forty-seven".