68162089 has 4 divisors (see below), whose sum is σ = 68240340. Its totient is φ = 68083840.

The previous prime is 68162057. The next prime is 68162119. The reversal of 68162089 is 98026186.

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 4481689 + 63680400 = 2117^2 + 7980^2 .

It is a cyclic number.

It is not a de Polignac number, because 68162089 - 2⁵ = 68162057 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68162189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37804 + ... + 39565.

It is an arithmetic number, because the mean of its divisors is an integer number (17060085).

Almost surely, 2^68162089 is an apocalyptic number.

It is an amenable number.

68162089 is a deficient number, since it is larger than the sum of its proper divisors (78251).

68162089 is an equidigital number, since it uses as much as digits as its factorization.

68162089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78250.

The product of its (nonzero) digits is 41472, while the sum is 40.

The square root of 68162089 is about 8256.0334907266. The cubic root of 68162089 is about 408.4895623578.

The spelling of 68162089 in words is "sixty-eight million, one hundred sixty-two thousand, eighty-nine".