68966767 has 4 divisors (see below), whose sum is σ = 69390040. Its totient is φ = 68543496.

The previous prime is 68966747. The next prime is 68966771. The reversal of 68966767 is 76766986.

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-68966767 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68966707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 211392 + ... + 211717.

It is an arithmetic number, because the mean of its divisors is an integer number (17347510).

Almost surely, 2^68966767 is an apocalyptic number.

68966767 is a deficient number, since it is larger than the sum of its proper divisors (423273).

68966767 is a wasteful number, since it uses less digits than its factorization.

68966767 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423272.

The product of its digits is 4572288, while the sum is 55.

The square root of 68966767 is about 8304.6232304663. The cubic root of 68966767 is about 410.0907334388.

The spelling of 68966767 in words is "sixty-eight million, nine hundred sixty-six thousand, seven hundred sixty-seven".