16550687 has 2 divisors, whose sum is σ = 16550688. Its totient is φ = 16550686.

The previous prime is 16550659. The next prime is 16550693. The reversal of 16550687 is 78605561.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16550687 - 2⁶ = 16550623 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16550687.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16550617) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8275343 + 8275344.

It is an arithmetic number, because the mean of its divisors is an integer number (8275344).

Almost surely, 2^16550687 is an apocalyptic number.

16550687 is a deficient number, since it is larger than the sum of its proper divisors (1).

16550687 is an equidigital number, since it uses as much as digits as its factorization.

16550687 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 50400, while the sum is 38.

The square root of 16550687 is about 4068.2535565031. The cubic root of 16550687 is about 254.8425889968.

The spelling of 16550687 in words is "sixteen million, five hundred fifty thousand, six hundred eighty-seven".