16646797 has 2 divisors, whose sum is σ = 16646798. Its totient is φ = 16646796.

The previous prime is 16646771. The next prime is 16646803. The reversal of 16646797 is 79764661.

16646797 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16410601 + 236196 = 4051^2 + 486^2 .

It is an emirp because it is prime and its reverse (79764661) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16646797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16646197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8323398 + 8323399.

It is an arithmetic number, because the mean of its divisors is an integer number (8323399).

Almost surely, 2^16646797 is an apocalyptic number.

It is an amenable number.

16646797 is a deficient number, since it is larger than the sum of its proper divisors (1).

16646797 is an equidigital number, since it uses as much as digits as its factorization.

16646797 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 16646797 is about 4080.0486516707. The cubic root of 16646797 is about 255.3349283456.

The spelling of 16646797 in words is "sixteen million, six hundred forty-six thousand, seven hundred ninety-seven".