1666681034 has 8 divisors (see below), whose sum is σ = 2500196160. Its totient is φ = 833282316.

The previous prime is 1666681019. The next prime is 1666681057. The reversal of 1666681034 is 4301866661.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1666680982 and 1666681000.

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, 34457 + ... + 67235.

It is an arithmetic number, because the mean of its divisors is an integer number (312524520).

Almost surely, 2^1666681034 is an apocalyptic number.

1666681034 is a deficient number, since it is larger than the sum of its proper divisors (833515126).

1666681034 is a wasteful number, since it uses less digits than its factorization.

1666681034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58204.

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 1666681034 is about 40825.0050091852. The cubic root of 1666681034 is about 1185.6345083583.

The spelling of 1666681034 in words is "one billion, six hundred sixty-six million, six hundred eighty-one thousand, thirty-four".