68189423 has 4 divisors (see below), whose sum is σ = 71778360. Its totient is φ = 64600488.

The previous prime is 68189417. The next prime is 68189441. The reversal of 68189423 is 32498186.

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

It is a cyclic number.

It is not a de Polignac number, because 68189423 - 2²² = 63995119 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68189413) 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, 1794440 + ... + 1794477.

It is an arithmetic number, because the mean of its divisors is an integer number (17944590).

Almost surely, 2^68189423 is an apocalyptic number.

68189423 is a deficient number, since it is larger than the sum of its proper divisors (3588937).

68189423 is a wasteful number, since it uses less digits than its factorization.

68189423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3588936.

The product of its digits is 82944, while the sum is 41.

The square root of 68189423 is about 8257.6887202171. The cubic root of 68189423 is about 408.5441585009.

The spelling of 68189423 in words is "sixty-eight million, one hundred eighty-nine thousand, four hundred twenty-three".