16712905 has 8 divisors (see below), whose sum is σ = 21878784. Its totient is φ = 12154800.

The previous prime is 16712897. The next prime is 16712909. The reversal of 16712905 is 50921761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 16712905 - 2³ = 16712897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16712909) 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 7 ways as a sum of consecutive naturals, for example, 151881 + ... + 151990.

It is an arithmetic number, because the mean of its divisors is an integer number (2734848).

Almost surely, 2^16712905 is an apocalyptic number.

It is an amenable number.

16712905 is a deficient number, since it is larger than the sum of its proper divisors (5165879).

16712905 is a wasteful number, since it uses less digits than its factorization.

16712905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 303887.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 16712905 is about 4088.1419985123. The cubic root of 16712905 is about 255.6724784928.

Subtracting 16712905 from its reverse (50921761), we obtain a triangular number (34208856 = T₈₂₇₁).

The spelling of 16712905 in words is "sixteen million, seven hundred twelve thousand, nine hundred five".