16607813 has 2 divisors, whose sum is σ = 16607814. Its totient is φ = 16607812.

The previous prime is 16607777. The next prime is 16607819. The reversal of 16607813 is 31870661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11950849 + 4656964 = 3457^2 + 2158^2 .

It is a cyclic number.

It is not a de Polignac number, because 16607813 - 2⁸ = 16607557 is a prime.

It is equal to p_1067657 and since 16607813 and 1067657 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16607813.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16607819) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8303906 + 8303907.

It is an arithmetic number, because the mean of its divisors is an integer number (8303907).

Almost surely, 2^16607813 is an apocalyptic number.

It is an amenable number.

16607813 is a deficient number, since it is larger than the sum of its proper divisors (1).

16607813 is an equidigital number, since it uses as much as digits as its factorization.

16607813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 16607813 is about 4075.2684574148. The cubic root of 16607813 is about 255.1354553949.

The spelling of 16607813 in words is "sixteen million, six hundred seven thousand, eight hundred thirteen".