872897 has 4 divisors (see below), whose sum is σ = 876480. Its totient is φ = 869316.
The previous prime is 872863. The next prime is 872923. The reversal of 872897 is 798278.
It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.
It is a cyclic number.
It is not a de Polignac number, because 872897 - 212 = 868801 is a prime.
It is an Ulam number.
It is a Duffinian number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 872897.
It is an unprimeable number.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1397 + ... + 1922.
It is an arithmetic number, because the mean of its divisors is an integer number (219120).
2872897 is an apocalyptic number.
It is an amenable number.
872897 is a deficient number, since it is larger than the sum of its proper divisors (3583).
872897 is a wasteful number, since it uses less digits than its factorization.
872897 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3582.
The product of its digits is 56448, while the sum is 41.
The square root of 872897 is about 934.2895696731. The cubic root of 872897 is about 95.5698711100.
The spelling of 872897 in words is "eight hundred seventy-two thousand, eight hundred ninety-seven".
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