16672705 has 8 divisors (see below), whose sum is σ = 22865472. Its totient is φ = 11432688.

The previous prime is 16672693. The next prime is 16672729. The reversal of 16672705 is 50727661.

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

It is a cyclic number.

It is not a de Polignac number, because 16672705 - 2⁵ = 16672673 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 238147 + ... + 238216.

It is an arithmetic number, because the mean of its divisors is an integer number (2858184).

Almost surely, 2^16672705 is an apocalyptic number.

It is an amenable number.

16672705 is a deficient number, since it is larger than the sum of its proper divisors (6192767).

16672705 is an equidigital number, since it uses as much as digits as its factorization.

16672705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476375.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 16672705 is about 4083.2223794449. Note that the first 3 decimals coincide. The cubic root of 16672705 is about 255.4673219518.

The spelling of 16672705 in words is "sixteen million, six hundred seventy-two thousand, seven hundred five".