17997714 has 80 divisors (see below), whose sum is σ = 47044800. Its totient is φ = 5036256.

The previous prime is 17997677. The next prime is 17997751. The reversal of 17997714 is 41779971.

It is an interprime number because it is at equal distance from previous prime (17997677) and next prime (17997751).

It is a self number, because there is not a number n which added to its sum of digits gives 17997714.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 66772 + ... + 67040.

It is an arithmetic number, because the mean of its divisors is an integer number (588060).

Almost surely, 2^17997714 is an apocalyptic number.

17997714 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

17997714 is the 2268-th nonagonal number.

It is a practical number, because each smaller number is the sum of distinct divisors of 17997714, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23522400).

17997714 is an abundant number, since it is smaller than the sum of its proper divisors (29047086).

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

17997714 is a wasteful number, since it uses less digits than its factorization.

17997714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349 (or 340 counting only the distinct ones).

The product of its digits is 111132, while the sum is 45.

The square root of 17997714 is about 4242.3712708814. The cubic root of 17997714 is about 262.0630444793.

The spelling of 17997714 in words is "seventeen million, nine hundred ninety-seven thousand, seven hundred fourteen".