1660066006 has 4 divisors (see below), whose sum is σ = 2490099012. Its totient is φ = 830033002.

The previous prime is 1660065959. The next prime is 1660066021. The reversal of 1660066006 is 6006600661.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 6006600661 = 191 ⋅31448171.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 415016500 + ... + 415016503.

It is an arithmetic number, because the mean of its divisors is an integer number (622524753).

Almost surely, 2^1660066006 is an apocalyptic number.

1660066006 is a deficient number, since it is larger than the sum of its proper divisors (830033006).

1660066006 is an equidigital number, since it uses as much as digits as its factorization.

1660066006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 830033005.

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 1660066006 is about 40743.9075936513. The cubic root of 1660066006 is about 1184.0638409658.

Adding to 1660066006 its reverse (6006600661), we get a palindrome (7666666667).

The spelling of 1660066006 in words is "one billion, six hundred sixty million, sixty-six thousand, six".