878774 has 16 divisors (see below), whose sum is σ = 1442112. Its totient is φ = 399168.

The previous prime is 878749. The next prime is 878777. The reversal of 878774 is 477878.

It is a happy number.

It is a Curzon number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878777) by changing a digit.

878774 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 7 ways as a sum of consecutive naturals, for example, 1667 + ... + 2129.

It is an arithmetic number, because the mean of its divisors is an integer number (90132).

2⁸⁷⁸⁷⁷⁴ is an apocalyptic number.

878774 is a deficient number, since it is larger than the sum of its proper divisors (563338).

878774 is a wasteful number, since it uses less digits than its factorization.

878774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 551.

The product of its digits is 87808, while the sum is 41.

The square root of 878774 is about 937.4294640132. The cubic root of 878774 is about 95.7838743319.

The spelling of 878774 in words is "eight hundred seventy-eight thousand, seven hundred seventy-four".