2117860678 has 8 divisors (see below), whose sum is σ = 3177144072. Its totient is φ = 1058812656.

The previous prime is 2117860673. The next prime is 2117860681. The reversal of 2117860678 is 8760687112.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2117860673) 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, 34300 + ... + 73567.

It is an arithmetic number, because the mean of its divisors is an integer number (397143009).

Almost surely, 2^2117860678 is an apocalyptic number.

2117860678 is a deficient number, since it is larger than the sum of its proper divisors (1059283394).

2117860678 is a wasteful number, since it uses less digits than its factorization.

2117860678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117686.

The product of its (nonzero) digits is 225792, while the sum is 46.

The square root of 2117860678 is about 46020.2203167260. The cubic root of 2117860678 is about 1284.1993989522.

The spelling of 2117860678 in words is "two billion, one hundred seventeen million, eight hundred sixty thousand, six hundred seventy-eight".