878722 has 8 divisors (see below), whose sum is σ = 1419516. Its totient is φ = 405552.

The previous prime is 878719. The next prime is 878737. The reversal of 878722 is 227878.

It can be written as a sum of positive squares in 2 ways, for example, as 826281 + 52441 = 909^2 + 229^2 .

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

It is a plaindrome in base 15.

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, 16873 + ... + 16924.

2⁸⁷⁸⁷²² is an apocalyptic number.

878722 is a deficient number, since it is larger than the sum of its proper divisors (540794).

878722 is a wasteful number, since it uses less digits than its factorization.

878722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33812.

The product of its digits is 12544, while the sum is 34.

The square root of 878722 is about 937.4017281827. The cubic root of 878722 is about 95.7819850104.

It can be divided in two parts, 878 and 722, that added together give a square (1600 = 40²).

The spelling of 878722 in words is "eight hundred seventy-eight thousand, seven hundred twenty-two".