68065069 has 4 divisors (see below), whose sum is σ = 68122396. Its totient is φ = 68007744.

The previous prime is 68065061. The next prime is 68065139. The reversal of 68065069 is 96056086.

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 743044 + 67322025 = 862^2 + 8205^2 .

It is a cyclic number.

It is not a de Polignac number, because 68065069 - 2³ = 68065061 is a prime.

It is a super-2 number, since 2×68065069² = 9265707235949522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68065061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26844 + ... + 29269.

It is an arithmetic number, because the mean of its divisors is an integer number (17030599).

Almost surely, 2^68065069 is an apocalyptic number.

It is an amenable number.

68065069 is a deficient number, since it is larger than the sum of its proper divisors (57327).

68065069 is a wasteful number, since it uses less digits than its factorization.

68065069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57326.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 68065069 is about 8250.1556955005. The cubic root of 68065069 is about 408.2956594795.

The spelling of 68065069 in words is "sixty-eight million, sixty-five thousand, sixty-nine".