68509067 has 8 divisors (see below), whose sum is σ = 74962992. Its totient is φ = 62092800.

The previous prime is 68509057. The next prime is 68509081. The reversal of 68509067 is 76090586.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-68509067 is a prime.

It is a super-2 number, since 2×68509067² = 9386984522420978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68509057) 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 7 ways as a sum of consecutive naturals, for example, 5534 + ... + 12947.

It is an arithmetic number, because the mean of its divisors is an integer number (9370374).

Almost surely, 2^68509067 is an apocalyptic number.

68509067 is a deficient number, since it is larger than the sum of its proper divisors (6453925).

68509067 is a wasteful number, since it uses less digits than its factorization.

68509067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18829.

The product of its (nonzero) digits is 90720, while the sum is 41.

The square root of 68509067 is about 8277.0204180007. The cubic root of 68509067 is about 409.1815260197.

The spelling of 68509067 in words is "sixty-eight million, five hundred nine thousand, sixty-seven".