16520673 has 16 divisors (see below), whose sum is σ = 23889600. Its totient is φ = 10094784.

The previous prime is 16520653. The next prime is 16520681. The reversal of 16520673 is 37602561.

It is not a de Polignac number, because 16520673 - 2¹⁴ = 16504289 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16520673.

It is not an unprimeable number, because it can be changed into a prime (16520653) 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 in 15 ways as a sum of consecutive naturals, for example, 4390 + ... + 7232.

It is an arithmetic number, because the mean of its divisors is an integer number (1493100).

Almost surely, 2^16520673 is an apocalyptic number.

16520673 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

16520673 is a deficient number, since it is larger than the sum of its proper divisors (7368927).

16520673 is a wasteful number, since it uses less digits than its factorization.

16520673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008.

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 16520673 is about 4064.5630761498. The cubic root of 16520673 is about 254.6884468807.

The spelling of 16520673 in words is "sixteen million, five hundred twenty thousand, six hundred seventy-three".