68066969 has 4 divisors (see below), whose sum is σ = 68229840. Its totient is φ = 67904100.

The previous prime is 68066899. The next prime is 68066981. The reversal of 68066969 is 96966086.

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 68066969 - 2¹² = 68062873 is a prime.

It is a super-2 number, since 2×68066969² = 9266224537693922, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (68060969) 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, 80807 + ... + 81644.

It is an arithmetic number, because the mean of its divisors is an integer number (17057460).

Almost surely, 2^68066969 is an apocalyptic number.

It is an amenable number.

68066969 is a deficient number, since it is larger than the sum of its proper divisors (162871).

68066969 is a wasteful number, since it uses less digits than its factorization.

68066969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162870.

The product of its (nonzero) digits is 839808, while the sum is 50.

The square root of 68066969 is about 8250.2708440390. The cubic root of 68066969 is about 408.2994585624.

The spelling of 68066969 in words is "sixty-eight million, sixty-six thousand, nine hundred sixty-nine".