872863 has 2 divisors, whose sum is σ = 872864. Its totient is φ = 872862.

The previous prime is 872843. The next prime is 872923. The reversal of 872863 is 368278.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 872863 - 2⁹ = 872351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (872843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436431 + 436432.

It is an arithmetic number, because the mean of its divisors is an integer number (436432).

2⁸⁷²⁸⁶³ is an apocalyptic number.

872863 is a deficient number, since it is larger than the sum of its proper divisors (1).

872863 is an equidigital number, since it uses as much as digits as its factorization.

872863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16128, while the sum is 34.

The square root of 872863 is about 934.2713738524. The cubic root of 872863 is about 95.5686302543.

The spelling of 872863 in words is "eight hundred seventy-two thousand, eight hundred sixty-three".