68196189 has 4 divisors (see below), whose sum is σ = 90928256. Its totient is φ = 45464124.

The previous prime is 68196157. The next prime is 68196199. The reversal of 68196189 is 98169186.

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.

It is not a de Polignac number, because 68196189 - 2⁵ = 68196157 is a prime.

68196189 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68196199) 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, 11366029 + ... + 11366034.

It is an arithmetic number, because the mean of its divisors is an integer number (22732064).

Almost surely, 2^68196189 is an apocalyptic number.

It is an amenable number.

68196189 is a deficient number, since it is larger than the sum of its proper divisors (22732067).

68196189 is a wasteful number, since it uses less digits than its factorization.

68196189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22732066.

The product of its digits is 186624, while the sum is 48.

The square root of 68196189 is about 8258.0983888544. The cubic root of 68196189 is about 408.5576704614.

The spelling of 68196189 in words is "sixty-eight million, one hundred ninety-six thousand, one hundred eighty-nine".