168427697 has 4 divisors (see below), whose sum is σ = 168867840. Its totient is φ = 167987556.

The previous prime is 168427661. The next prime is 168427709. The reversal of 168427697 is 796724861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 796724861 = 1831 ⋅435131.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168427697 is a prime.

It is a super-3 number, since 3×168427697³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168427657) 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, 219497 + ... + 220262.

It is an arithmetic number, because the mean of its divisors is an integer number (42216960).

Almost surely, 2^168427697 is an apocalyptic number.

It is an amenable number.

168427697 is a deficient number, since it is larger than the sum of its proper divisors (440143).

168427697 is an equidigital number, since it uses as much as digits as its factorization.

168427697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 440142.

The product of its digits is 1016064, while the sum is 50.

The square root of 168427697 is about 12977.9696794221. The cubic root of 168427697 is about 552.2526859378.

The spelling of 168427697 in words is "one hundred sixty-eight million, four hundred twenty-seven thousand, six hundred ninety-seven".