68071279 has 4 divisors (see below), whose sum is σ = 69654376. Its totient is φ = 66488184.

The previous prime is 68071271. The next prime is 68071301. The reversal of 68071279 is 97217086.

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

It is a cyclic number.

It is not a de Polignac number, because 68071279 - 2³ = 68071271 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 (68071271) 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, 791484 + ... + 791569.

It is an arithmetic number, because the mean of its divisors is an integer number (17413594).

Almost surely, 2^68071279 is an apocalyptic number.

68071279 is a deficient number, since it is larger than the sum of its proper divisors (1583097).

68071279 is a wasteful number, since it uses less digits than its factorization.

68071279 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1583096.

The product of its (nonzero) digits is 42336, while the sum is 40.

The square root of 68071279 is about 8250.5320434503. The cubic root of 68071279 is about 408.3080762202.

The spelling of 68071279 in words is "sixty-eight million, seventy-one thousand, two hundred seventy-nine".