16804537 has 2 divisors, whose sum is σ = 16804538. Its totient is φ = 16804536.

The previous prime is 16804523. The next prime is 16804577. The reversal of 16804537 is 73540861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14661241 + 2143296 = 3829^2 + 1464^2 .

It is a cyclic number.

It is not a de Polignac number, because 16804537 - 2⁷ = 16804409 is a prime.

It is not a weakly prime, because it can be changed into another prime (16804507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8402268 + 8402269.

It is an arithmetic number, because the mean of its divisors is an integer number (8402269).

Almost surely, 2^16804537 is an apocalyptic number.

It is an amenable number.

16804537 is a deficient number, since it is larger than the sum of its proper divisors (1).

16804537 is an equidigital number, since it uses as much as digits as its factorization.

16804537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 16804537 is about 4099.3337263511. Note that the first 3 decimals coincide. The cubic root of 16804537 is about 256.1388864290.

The spelling of 16804537 in words is "sixteen million, eight hundred four thousand, five hundred thirty-seven".