168140897 has 8 divisors (see below), whose sum is σ = 178713216. Its totient is φ = 157644352.

The previous prime is 168140891. The next prime is 168140909. The reversal of 168140897 is 798041861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 168140897 - 2²⁶ = 101032033 is a prime.

It is a super-2 number, since 2×168140897² = 56542722487929218, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168140891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14333 + ... + 23274.

It is an arithmetic number, because the mean of its divisors is an integer number (22339152).

Almost surely, 2^168140897 is an apocalyptic number.

168140897 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

168140897 is a deficient number, since it is larger than the sum of its proper divisors (10572319).

168140897 is a wasteful number, since it uses less digits than its factorization.

168140897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37887.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 168140897 is about 12966.9154774757. The cubic root of 168140897 is about 551.9390477840.

The spelling of 168140897 in words is "one hundred sixty-eight million, one hundred forty thousand, eight hundred ninety-seven".