16670985 has 8 divisors (see below), whose sum is σ = 26673600. Its totient is φ = 8891184.

The previous prime is 16670977. The next prime is 16670987. The reversal of 16670985 is 58907661.

16670985 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 16670985 - 2³ = 16670977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16670987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 555685 + ... + 555714.

It is an arithmetic number, because the mean of its divisors is an integer number (3334200).

Almost surely, 2^16670985 is an apocalyptic number.

16670985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16670985 is a deficient number, since it is larger than the sum of its proper divisors (10002615).

16670985 is a wasteful number, since it uses less digits than its factorization.

16670985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111407.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 16670985 is about 4083.0117560448. The cubic root of 16670985 is about 255.4585367565.

The spelling of 16670985 in words is "sixteen million, six hundred seventy thousand, nine hundred eighty-five".