878787878 has 8 divisors (see below), whose sum is σ = 1319785968. Its totient is φ = 438859224.

The previous prime is 878787853. The next prime is 878787911.

878787878 is nontrivially palindromic in base 10.

878787878 is an esthetic number in base 10, because in such base its adjacent digits differ by 1.

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

It is an alternating number because its digits alternate between even and odd.

878787878 is an undulating number in base 10.

It is a congruent number.

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, 265301 + ... + 268592.

It is an arithmetic number, because the mean of its divisors is an integer number (164973246).

Almost surely, 2^878787878 is an apocalyptic number.

878787878 is a deficient number, since it is larger than the sum of its proper divisors (440998090).

878787878 is a wasteful number, since it uses less digits than its factorization.

878787878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 534718.

The product of its digits is 78675968, while the sum is 68.

The square root of 878787878 is about 29644.3565961550. The cubic root of 878787878 is about 957.8437855010.

The spelling of 878787878 in words is "eight hundred seventy-eight million, seven hundred eighty-seven thousand, eight hundred seventy-eight".