16530697 has 2 divisors, whose sum is σ = 16530698. Its totient is φ = 16530696.

The previous prime is 16530677. The next prime is 16530707. The reversal of 16530697 is 79603561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9369721 + 7160976 = 3061^2 + 2676^2 .

It is an emirp because it is prime and its reverse (79603561) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16530697 - 2¹¹ = 16528649 is a prime.

It is not a weakly prime, because it can be changed into another prime (16530607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8265348 + 8265349.

It is an arithmetic number, because the mean of its divisors is an integer number (8265349).

Almost surely, 2^16530697 is an apocalyptic number.

It is an amenable number.

16530697 is a deficient number, since it is larger than the sum of its proper divisors (1).

16530697 is an equidigital number, since it uses as much as digits as its factorization.

16530697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34020, while the sum is 37.

The square root of 16530697 is about 4065.7959860278. The cubic root of 16530697 is about 254.7399476240.

The spelling of 16530697 in words is "sixteen million, five hundred thirty thousand, six hundred ninety-seven".