168606697 has 12 divisors (see below), whose sum is σ = 207672660. Its totient is φ = 136018176.

The previous prime is 168606689. The next prime is 168606701. The reversal of 168606697 is 796606861.

It can be written as a sum of positive squares in 2 ways, for example, as 97693456 + 70913241 = 9884^2 + 8421^2 .

It is not a de Polignac number, because 168606697 - 2³ = 168606689 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 168606697.

It is not an unprimeable number, because it can be changed into a prime (168603697) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 100372 + ... + 102037.

It is an arithmetic number, because the mean of its divisors is an integer number (17306055).

Almost surely, 2^168606697 is an apocalyptic number.

168606697 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

It is an amenable number.

168606697 is a deficient number, since it is larger than the sum of its proper divisors (39065963).

168606697 is a wasteful number, since it uses less digits than its factorization.

168606697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 202440 (or 202433 counting only the distinct ones).

The product of its (nonzero) digits is 653184, while the sum is 49.

The square root of 168606697 is about 12984.8641502328. The cubic root of 168606697 is about 552.4482559732.

The spelling of 168606697 in words is "one hundred sixty-eight million, six hundred six thousand, six hundred ninety-seven".