68706479 has 4 divisors (see below), whose sum is σ = 68813976. Its totient is φ = 68598984.

The previous prime is 68706461. The next prime is 68706493. The reversal of 68706479 is 97460786.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97460786 = 2 ⋅48730393.

It is a cyclic number.

It is not a de Polignac number, because 68706479 - 2¹² = 68702383 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 (68706409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52784 + ... + 54069.

It is an arithmetic number, because the mean of its divisors is an integer number (17203494).

Almost surely, 2^68706479 is an apocalyptic number.

68706479 is a deficient number, since it is larger than the sum of its proper divisors (107497).

68706479 is a wasteful number, since it uses less digits than its factorization.

68706479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 107496.

The product of its (nonzero) digits is 508032, while the sum is 47.

The square root of 68706479 is about 8288.9371453764. The cubic root of 68706479 is about 409.5741741904.

The spelling of 68706479 in words is "sixty-eight million, seven hundred six thousand, four hundred seventy-nine".