16981698 has 32 divisors (see below), whose sum is σ = 34802496. Its totient is φ = 5522688.

The previous prime is 16981697. The next prime is 16981703. The reversal of 16981698 is 89618961.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (16981697) 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, 59865 + ... + 60147.

It is an arithmetic number, because the mean of its divisors is an integer number (1087578).

Almost surely, 2^16981698 is an apocalyptic number.

16981698 is an abundant number, since it is smaller than the sum of its proper divisors (17820798).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16981698 is a wasteful number, since it uses less digits than its factorization.

16981698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 498.

The product of its digits is 186624, while the sum is 48.

The square root of 16981698 is about 4120.8855844345. The cubic root of 16981698 is about 257.0358522154.

The spelling of 16981698 in words is "sixteen million, nine hundred eighty-one thousand, six hundred ninety-eight".