16672787 has 2 divisors, whose sum is σ = 16672788. Its totient is φ = 16672786.

The previous prime is 16672771. The next prime is 16672807. The reversal of 16672787 is 78727661.

It is a weak prime.

It is an emirp because it is prime and its reverse (78727661) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 16672787 - 2⁴ = 16672771 is a prime.

It is not a weakly prime, because it can be changed into another prime (16672757) 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, 8336393 + 8336394.

It is an arithmetic number, because the mean of its divisors is an integer number (8336394).

Almost surely, 2^16672787 is an apocalyptic number.

16672787 is a deficient number, since it is larger than the sum of its proper divisors (1).

16672787 is an equidigital number, since it uses as much as digits as its factorization.

16672787 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 44.

The square root of 16672787 is about 4083.2324205218. The cubic root of 16672787 is about 255.4677407657.

The spelling of 16672787 in words is "sixteen million, six hundred seventy-two thousand, seven hundred eighty-seven".