16680611 has 2 divisors, whose sum is σ = 16680612. Its totient is φ = 16680610.

The previous prime is 16680607. The next prime is 16680617. The reversal of 16680611 is 11608661.

It is a weak prime.

It is an emirp because it is prime and its reverse (11608661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16680611 - 2² = 16680607 is a prime.

It is not a weakly prime, because it can be changed into another prime (16680617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8340305 + 8340306.

It is an arithmetic number, because the mean of its divisors is an integer number (8340306).

Almost surely, 2^16680611 is an apocalyptic number.

16680611 is a deficient number, since it is larger than the sum of its proper divisors (1).

16680611 is an equidigital number, since it uses as much as digits as its factorization.

16680611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 16680611 is about 4084.1903726443. The cubic root of 16680611 is about 255.5076954342.

The spelling of 16680611 in words is "sixteen million, six hundred eighty thousand, six hundred eleven".