68447679 has 8 divisors (see below), whose sum is σ = 91558272. Its totient is φ = 45484440.

The previous prime is 68447677. The next prime is 68447683. The reversal of 68447679 is 97674486.

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

It is not a de Polignac number, because 68447679 - 2¹ = 68447677 is a prime.

It is a super-3 number, since 3×68447679³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68447677) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35749 + ... + 37614.

It is an arithmetic number, because the mean of its divisors is an integer number (11444784).

Almost surely, 2^68447679 is an apocalyptic number.

68447679 is a deficient number, since it is larger than the sum of its proper divisors (23110593).

68447679 is a wasteful number, since it uses less digits than its factorization.

68447679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73677.

The product of its digits is 2032128, while the sum is 51.

The square root of 68447679 is about 8273.3112476203. The cubic root of 68447679 is about 409.0592728981.

The spelling of 68447679 in words is "sixty-eight million, four hundred forty-seven thousand, six hundred seventy-nine".