878673511 has 4 divisors (see below), whose sum is σ = 879979792. Its totient is φ = 877367232.

The previous prime is 878673473. The next prime is 878673541. The reversal of 878673511 is 115376878.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 878673511 - 2¹⁵ = 878640743 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (878673541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 652131 + ... + 653476.

It is an arithmetic number, because the mean of its divisors is an integer number (219994948).

Almost surely, 2^878673511 is an apocalyptic number.

878673511 is a deficient number, since it is larger than the sum of its proper divisors (1306281).

878673511 is a wasteful number, since it uses less digits than its factorization.

878673511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1306280.

The product of its digits is 282240, while the sum is 46.

The square root of 878673511 is about 29642.4275490386. The cubic root of 878673511 is about 957.8022318734.

It can be divided in two parts, 87867 and 3511, that added together give a triangular number (91378 = T₄₂₇).

The spelling of 878673511 in words is "eight hundred seventy-eight million, six hundred seventy-three thousand, five hundred eleven".