6662066 has 4 divisors (see below), whose sum is σ = 9993102. Its totient is φ = 3331032.

The previous prime is 6662063. The next prime is 6662069. The reversal of 6662066 is 6602666.

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 (6662063) and next prime (6662069).

It can be written as a sum of positive squares in only one way, i.e., 4932841 + 1729225 = 2221^2 + 1315^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6662063) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1665515 + ... + 1665518.

Almost surely, 2^6662066 is an apocalyptic number.

6662066 is a deficient number, since it is larger than the sum of its proper divisors (3331036).

6662066 is a wasteful number, since it uses less digits than its factorization.

6662066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3331035.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 6662066 is about 2581.0978284443. The cubic root of 6662066 is about 188.1639018824.

The spelling of 6662066 in words is "six million, six hundred sixty-two thousand, sixty-six".