878451 has 16 divisors (see below), whose sum is σ = 1363200. Its totient is φ = 492768.

The previous prime is 878443. The next prime is 878453. The reversal of 878451 is 154878.

It is a happy number.

It is not a de Polignac number, because 878451 - 2³ = 878443 is a prime.

It is an Ulam number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 878451.

It is not an unprimeable number, because it can be changed into a prime (878453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 1593.

It is an arithmetic number, because the mean of its divisors is an integer number (85200).

2⁸⁷⁸⁴⁵¹ is an apocalyptic number.

878451 is a deficient number, since it is larger than the sum of its proper divisors (484749).

878451 is a wasteful number, since it uses less digits than its factorization.

878451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778.

The product of its digits is 8960, while the sum is 33.

The square root of 878451 is about 937.2571685509. The cubic root of 878451 is about 95.7721375324.

The spelling of 878451 in words is "eight hundred seventy-eight thousand, four hundred fifty-one".