1946666 has 4 divisors (see below), whose sum is σ = 2920002. Its totient is φ = 973332.

The previous prime is 1946663. The next prime is 1946669. The reversal of 1946666 is 6666491.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (1946663) and next prime (1946669).

It can be written as a sum of positive squares in only one way, i.e., 1809025 + 137641 = 1345^2 + 371^2 .

1946666 is a modest number, since divided by 6666 gives 194 as remainder.

It is not an unprimeable number, because it can be changed into a prime (1946663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486665 + ... + 486668.

2^1946666 is an apocalyptic number.

1946666 is a deficient number, since it is larger than the sum of its proper divisors (973336).

1946666 is an equidigital number, since it uses as much as digits as its factorization.

1946666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 973335.

The product of its digits is 46656, while the sum is 38.

The square root of 1946666 is about 1395.2297301878. The cubic root of 1946666 is about 124.8620558272.

The spelling of 1946666 in words is "one million, nine hundred forty-six thousand, six hundred sixty-six".