16006066 has 4 divisors (see below), whose sum is σ = 24009102. Its totient is φ = 8003032.

The previous prime is 16006049. The next prime is 16006087. The reversal of 16006066 is 66060061.

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., 12285025 + 3721041 = 3505^2 + 1929^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16006066.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4001515 + ... + 4001518.

Almost surely, 2^16006066 is an apocalyptic number.

16006066 is a deficient number, since it is larger than the sum of its proper divisors (8003036).

16006066 is an equidigital number, since it uses as much as digits as its factorization.

16006066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8003035.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16006066 is about 4000.7581781457. The cubic root of 16006066 is about 252.0160504600.

The spelling of 16006066 in words is "sixteen million, six thousand, sixty-six".