1666668350 has 24 divisors (see below), whose sum is σ = 3118581648. Its totient is φ = 662672000.

The previous prime is 1666668323. The next prime is 1666668359. The reversal of 1666668350 is 538666661.

It is a hoax number, since the sum of its digits (47) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1666668295 and 1666668304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1666668359) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 91451 + ... + 108150.

It is an arithmetic number, because the mean of its divisors is an integer number (129940902).

Almost surely, 2^1666668350 is an apocalyptic number.

1666668350 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666668350 is a deficient number, since it is larger than the sum of its proper divisors (1451913298).

1666668350 is a wasteful number, since it uses less digits than its factorization.

1666668350 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199780 (or 199775 counting only the distinct ones).

The product of its (nonzero) digits is 933120, while the sum is 47.

The square root of 1666668350 is about 40824.8496629198. The cubic root of 1666668350 is about 1185.6315006590.

The spelling of 1666668350 in words is "one billion, six hundred sixty-six million, six hundred sixty-eight thousand, three hundred fifty".