878407 has 8 divisors (see below), whose sum is σ = 938736. Its totient is φ = 819072.

The previous prime is 878387. The next prime is 878411. The reversal of 878407 is 704878.

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

It is a cyclic number.

It is not a de Polignac number, because 878407 - 2⁷ = 878279 is a prime.

It is a super-3 number, since 3×878407³ = 2033333513252655429, which contains 333 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878467) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2613 + ... + 2929.

It is an arithmetic number, because the mean of its divisors is an integer number (117342).

2⁸⁷⁸⁴⁰⁷ is an apocalyptic number.

878407 is a deficient number, since it is larger than the sum of its proper divisors (60329).

878407 is a wasteful number, since it uses less digits than its factorization.

878407 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497.

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

The square root of 878407 is about 937.2336955104. The cubic root of 878407 is about 95.7705384888.

The spelling of 878407 in words is "eight hundred seventy-eight thousand, four hundred seven".