68306977 has 8 divisors (see below), whose sum is σ = 70761600. Its totient is φ = 65859024.

The previous prime is 68306947. The next prime is 68306989. The reversal of 68306977 is 77960386.

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

It is a cyclic number.

It is not a de Polignac number, because 68306977 - 2¹⁵ = 68274209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68306947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28998 + ... + 31264.

It is an arithmetic number, because the mean of its divisors is an integer number (8845200).

Almost surely, 2^68306977 is an apocalyptic number.

It is an amenable number.

68306977 is a deficient number, since it is larger than the sum of its proper divisors (2454623).

68306977 is a wasteful number, since it uses less digits than its factorization.

68306977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3335.

The product of its (nonzero) digits is 381024, while the sum is 46.

The square root of 68306977 is about 8264.8035064362. The cubic root of 68306977 is about 408.7787913146.

The spelling of 68306977 in words is "sixty-eight million, three hundred six thousand, nine hundred seventy-seven".