2073666686 has 16 divisors (see below), whose sum is σ = 3828308064. Its totient is φ = 820351584.

The previous prime is 2073666671. The next prime is 2073666697. The reversal of 2073666686 is 6866663702.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5696705 + ... + 5697068.

It is an arithmetic number, because the mean of its divisors is an integer number (239269254).

Almost surely, 2^2073666686 is an apocalyptic number.

2073666686 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

2073666686 is a deficient number, since it is larger than the sum of its proper divisors (1754641378).

2073666686 is a wasteful number, since it uses less digits than its factorization.

2073666686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11393795.

The product of its (nonzero) digits is 2612736, while the sum is 50.

The square root of 2073666686 is about 45537.5305215379. The cubic root of 2073666686 is about 1275.2039527124.

The spelling of 2073666686 in words is "two billion, seventy-three million, six hundred sixty-six thousand, six hundred eighty-six".