68724067 has 4 divisors (see below), whose sum is σ = 69366456. Its totient is φ = 68081680.

The previous prime is 68724031. The next prime is 68724101. The reversal of 68724067 is 76042786.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-68724067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68724367) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 321034 + ... + 321247.

It is an arithmetic number, because the mean of its divisors is an integer number (17341614).

Almost surely, 2^68724067 is an apocalyptic number.

68724067 is a deficient number, since it is larger than the sum of its proper divisors (642389).

68724067 is a wasteful number, since it uses less digits than its factorization.

68724067 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 642388.

The product of its (nonzero) digits is 112896, while the sum is 40.

The square root of 68724067 is about 8289.9980096499. The cubic root of 68724067 is about 409.6091198321.

The spelling of 68724067 in words is "sixty-eight million, seven hundred twenty-four thousand, sixty-seven".