5678661966 has 16 divisors (see below), whose sum is σ = 11358555264. Its totient is φ = 1892682104.

The previous prime is 5678661953. The next prime is 5678662009. The reversal of 5678661966 is 6691668765.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15301 + ... + 107663.

It is an arithmetic number, because the mean of its divisors is an integer number (709909704).

Almost surely, 2^5678661966 is an apocalyptic number.

5678661966 is an abundant number, since it is smaller than the sum of its proper divisors (5679893298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

5678661966 is a wasteful number, since it uses less digits than its factorization.

5678661966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102615.

The product of its digits is 19595520, while the sum is 60.

The square root of 5678661966 is about 75356.8972689295. The cubic root of 5678661966 is about 1784.0841670275.

The spelling of 5678661966 in words is "five billion, six hundred seventy-eight million, six hundred sixty-one thousand, nine hundred sixty-six".