16953985 has 16 divisors (see below), whose sum is σ = 21556800. Its totient is φ = 12764736.

The previous prime is 16953983. The next prime is 16954001. The reversal of 16953985 is 58935961.

It is a cyclic number.

It is not a de Polignac number, because 16953985 - 2¹ = 16953983 is a prime.

Its product of digits (291600) is a multiple of the sum of its prime divisors (1200).

It is not an unprimeable number, because it can be changed into a prime (16953983) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16507 + ... + 17503.

It is an arithmetic number, because the mean of its divisors is an integer number (1347300).

Almost surely, 2^16953985 is an apocalyptic number.

It is an amenable number.

16953985 is a deficient number, since it is larger than the sum of its proper divisors (4602815).

16953985 is a wasteful number, since it uses less digits than its factorization.

16953985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1200.

The product of its digits is 291600, while the sum is 46.

The square root of 16953985 is about 4117.5217060751. The cubic root of 16953985 is about 256.8959542898.

The spelling of 16953985 in words is "sixteen million, nine hundred fifty-three thousand, nine hundred eighty-five".