6650066 has 4 divisors (see below), whose sum is σ = 9975102. Its totient is φ = 3325032.

The previous prime is 6650051. The next prime is 6650071. The reversal of 6650066 is 6600566.

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

It can be written as a sum of positive squares in only one way, i.e., 4182025 + 2468041 = 2045^2 + 1571^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1662515 + ... + 1662518.

Almost surely, 2^6650066 is an apocalyptic number.

6650066 is a deficient number, since it is larger than the sum of its proper divisors (3325036).

6650066 is a wasteful number, since it uses less digits than its factorization.

6650066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3325035.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 6650066 is about 2578.7721884649. The cubic root of 6650066 is about 188.0508576758.

It can be divided in two parts, 66500 and 66, that added together give a palindrome (66566).

The spelling of 6650066 in words is "six million, six hundred fifty thousand, sixty-six".