68731479 has 24 divisors (see below), whose sum is σ = 104176800. Its totient is φ = 43606080.

The previous prime is 68731477. The next prime is 68731517. The reversal of 68731479 is 97413786.

It is not a de Polignac number, because 68731479 - 2¹ = 68731477 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68731477) 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 23 ways as a sum of consecutive naturals, for example, 16677 + ... + 20385.

It is an arithmetic number, because the mean of its divisors is an integer number (4340700).

Almost surely, 2^68731479 is an apocalyptic number.

68731479 is a deficient number, since it is larger than the sum of its proper divisors (35445321).

68731479 is a wasteful number, since it uses less digits than its factorization.

68731479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3815 (or 3812 counting only the distinct ones).

The product of its digits is 254016, while the sum is 45.

The square root of 68731479 is about 8290.4450423364. The cubic root of 68731479 is about 409.6238449679.

The spelling of 68731479 in words is "sixty-eight million, seven hundred thirty-one thousand, four hundred seventy-nine".