68717479 has 4 divisors (see below), whose sum is σ = 68773320. Its totient is φ = 68661640.

The previous prime is 68717461. The next prime is 68717497. The reversal of 68717479 is 97471786.

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

It is an interprime number because it is at equal distance from previous prime (68717461) and next prime (68717497).

It is a cyclic number.

It is not a de Polignac number, because 68717479 - 2⁷ = 68717351 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 (68727479) 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, 26032 + ... + 28549.

It is an arithmetic number, because the mean of its divisors is an integer number (17193330).

Almost surely, 2^68717479 is an apocalyptic number.

68717479 is a deficient number, since it is larger than the sum of its proper divisors (55841).

68717479 is a wasteful number, since it uses less digits than its factorization.

68717479 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55840.

The product of its digits is 592704, while the sum is 49.

The square root of 68717479 is about 8289.6006538313. The cubic root of 68717479 is about 409.5960308167.

It can be divided in two parts, 68717 and 479, that added together give a palindrome (69196).

The spelling of 68717479 in words is "sixty-eight million, seven hundred seventeen thousand, four hundred seventy-nine".