1666667050 has 24 divisors (see below), whose sum is σ = 3101565996. Its totient is φ = 666330240.

The previous prime is 1666667027. The next prime is 1666667059. The reversal of 1666667050 is 507666661.

It can be written as a sum of positive squares in 6 ways, for example, as 249671601 + 1416995449 = 15801^2 + 37643^2 .

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 1666666988 and 1666667006.

It is not an unprimeable number, because it can be changed into a prime (1666667059) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 107382 + ... + 121918.

Almost surely, 2^1666667050 is an apocalyptic number.

1666667050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1666667050 is a deficient number, since it is larger than the sum of its proper divisors (1434898946).

1666667050 is a wasteful number, since it uses less digits than its factorization.

1666667050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16842 (or 16837 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 43.

The square root of 1666667050 is about 40824.8337412414. The cubic root of 1666667050 is about 1185.6311923951.

The spelling of 1666667050 in words is "one billion, six hundred sixty-six million, six hundred sixty-seven thousand, fifty".