17897113 has 4 divisors (see below), whose sum is σ = 19273828. Its totient is φ = 16520400.

The previous prime is 17897063. The next prime is 17897123. The reversal of 17897113 is 31179871.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31179871 = 2503 ⋅12457.

It can be written as a sum of positive squares in 2 ways, for example, as 2152089 + 15745024 = 1467^2 + 3968^2 .

It is a de Polignac number, because none of the positive numbers 2^k-17897113 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (17897123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 688338 + ... + 688363.

It is an arithmetic number, because the mean of its divisors is an integer number (4818457).

Almost surely, 2^17897113 is an apocalyptic number.

17897113 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

17897113 is a deficient number, since it is larger than the sum of its proper divisors (1376715).

17897113 is a wasteful number, since it uses less digits than its factorization.

17897113 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1376714.

The product of its digits is 10584, while the sum is 37.

The square root of 17897113 is about 4230.4979612334. The cubic root of 17897113 is about 261.5738512598.

It can be divided in two parts, 17 and 897113, that added together give a triangular number (897130 = T₁₃₃₉).

The spelling of 17897113 in words is "seventeen million, eight hundred ninety-seven thousand, one hundred thirteen".