877816 has 16 divisors (see below), whose sum is σ = 1657800. Its totient is φ = 435744.

The previous prime is 877783. The next prime is 877817. The reversal of 877816 is 618778.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (877817) by changing a digit.

877816 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 3 ways as a sum of consecutive naturals, for example, 1126 + ... + 1738.

2⁸⁷⁷⁸¹⁶ is an apocalyptic number.

It is an amenable number.

877816 is a deficient number, since it is larger than the sum of its proper divisors (779984).

877816 is a wasteful number, since it uses less digits than its factorization.

877816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 798 (or 794 counting only the distinct ones).

The product of its digits is 18816, while the sum is 37.

The square root of 877816 is about 936.9183528995. The cubic root of 877816 is about 95.7490552482.

The spelling of 877816 in words is "eight hundred seventy-seven thousand, eight hundred sixteen".