873647 has 6 divisors (see below), whose sum is σ = 928368. Its totient is φ = 821984.

The previous prime is 873643. The next prime is 873659. The reversal of 873647 is 746378.

It is not a de Polignac number, because 873647 - 2² = 873643 is a prime.

It is a d-powerful number, because it can be written as 8⁵ + 7 + 6³ + 3⁶ + 4⁷ + 7⁷ .

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 873647.

It is not an unprimeable number, because it can be changed into a prime (873641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1223 + ... + 1800.

It is an arithmetic number, because the mean of its divisors is an integer number (154728).

2⁸⁷³⁶⁴⁷ is an apocalyptic number.

873647 is a deficient number, since it is larger than the sum of its proper divisors (54721).

873647 is a wasteful number, since it uses less digits than its factorization.

873647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3057 (or 3040 counting only the distinct ones).

The product of its digits is 28224, while the sum is 35.

The square root of 873647 is about 934.6908579846. The cubic root of 873647 is about 95.5972347373.

The spelling of 873647 in words is "eight hundred seventy-three thousand, six hundred forty-seven".