168874693 has 4 divisors (see below), whose sum is σ = 181865068. Its totient is φ = 155884320.

The previous prime is 168874687. The next prime is 168874709. The reversal of 168874693 is 396478861.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 27217089 + 141657604 = 5217^2 + 11902^2 .

It is a cyclic number.

It is not a de Polignac number, because 168874693 - 2⁵ = 168874661 is a prime.

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 168874693.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168874193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6495168 + ... + 6495193.

It is an arithmetic number, because the mean of its divisors is an integer number (45466267).

Almost surely, 2^168874693 is an apocalyptic number.

168874693 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

168874693 is a deficient number, since it is larger than the sum of its proper divisors (12990375).

168874693 is a wasteful number, since it uses less digits than its factorization.

168874693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12990374.

The product of its digits is 1741824, while the sum is 52.

The square root of 168874693 is about 12995.1796063002. The cubic root of 168874693 is about 552.7408017855.

The spelling of 168874693 in words is "one hundred sixty-eight million, eight hundred seventy-four thousand, six hundred ninety-three".