66006992 has 20 divisors (see below), whose sum is σ = 128060256. Its totient is φ = 32959200.

The previous prime is 66006989. The next prime is 66007031. The reversal of 66006992 is 29960066.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11867 + ... + 16517.

Almost surely, 2^66006992 is an apocalyptic number.

It is an amenable number.

66006992 is a deficient number, since it is larger than the sum of its proper divisors (62053264).

66006992 is a wasteful number, since it uses less digits than its factorization.

66006992 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5546 (or 5540 counting only the distinct ones).

The product of its (nonzero) digits is 34992, while the sum is 38.

The square root of 66006992 is about 8124.4687210919. The cubic root of 66006992 is about 404.1382724423.

The spelling of 66006992 in words is "sixty-six million, six thousand, nine hundred ninety-two".