78868826 has 8 divisors (see below), whose sum is σ = 118341300. Its totient is φ = 39421728.

The previous prime is 78868819. The next prime is 78868843. The reversal of 78868826 is 62886887.

It can be written as a sum of positive squares in 2 ways, for example, as 77176225 + 1692601 = 8785^2 + 1301^2 .

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

It is a Curzon number.

It is a plaindrome in base 13.

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, 7280 + ... + 14516.

Almost surely, 2^78868826 is an apocalyptic number.

78868826 is a deficient number, since it is larger than the sum of its proper divisors (39472474).

78868826 is a wasteful number, since it uses less digits than its factorization.

78868826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12688.

The product of its digits is 2064384, while the sum is 53.

The square root of 78868826 is about 8880.8122376278. The cubic root of 78868826 is about 428.8464230771.

The spelling of 78868826 in words is "seventy-eight million, eight hundred sixty-eight thousand, eight hundred twenty-six".