68154289 has 4 divisors (see below), whose sum is σ = 77890624. Its totient is φ = 58417956.

The previous prime is 68154257. The next prime is 68154299. The reversal of 68154289 is 98245186.

It is a happy number.

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 a cyclic number.

It is not a de Polignac number, because 68154289 - 2⁵ = 68154257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (68154299) 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, 4868157 + ... + 4868170.

It is an arithmetic number, because the mean of its divisors is an integer number (19472656).

Almost surely, 2^68154289 is an apocalyptic number.

It is an amenable number.

68154289 is a deficient number, since it is larger than the sum of its proper divisors (9736335).

68154289 is an equidigital number, since it uses as much as digits as its factorization.

68154289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9736334.

The product of its digits is 138240, while the sum is 43.

The square root of 68154289 is about 8255.5610954071. The cubic root of 68154289 is about 408.4739801861.

The spelling of 68154289 in words is "sixty-eight million, one hundred fifty-four thousand, two hundred eighty-nine".