16898985 has 12 divisors (see below), whose sum is σ = 29291652. Its totient is φ = 9012768.

The previous prime is 16898983. The next prime is 16899023. The reversal of 16898985 is 58989861.

It can be written as a sum of positive squares in 2 ways, for example, as 7033104 + 9865881 = 2652^2 + 3141^2 .

It is not a de Polignac number, because 16898985 - 2¹ = 16898983 is a prime.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (16898983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187722 + ... + 187811.

It is an arithmetic number, because the mean of its divisors is an integer number (2440971).

Almost surely, 2^16898985 is an apocalyptic number.

16898985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

16898985 is a deficient number, since it is larger than the sum of its proper divisors (12392667).

16898985 is a wasteful number, since it uses less digits than its factorization.

16898985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 375544 (or 375541 counting only the distinct ones).

The product of its digits is 1244160, while the sum is 54.

The square root of 16898985 is about 4110.8375059104. The cubic root of 16898985 is about 256.6178567630.

It can be divided in two parts, 1 and 6898985, that added together give a palindrome (6898986).

The spelling of 16898985 in words is "sixteen million, eight hundred ninety-eight thousand, nine hundred eighty-five".