68209479 has 32 divisors (see below), whose sum is σ = 112593600. Its totient is φ = 40521600.

The previous prime is 68209459. The next prime is 68209489. The reversal of 68209479 is 97490286.

It is a happy number.

It is not a de Polignac number, because 68209479 - 2¹¹ = 68207431 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68209459) 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 31 ways as a sum of consecutive naturals, for example, 6829 + ... + 13529.

It is an arithmetic number, because the mean of its divisors is an integer number (3518550).

Almost surely, 2^68209479 is an apocalyptic number.

68209479 is a deficient number, since it is larger than the sum of its proper divisors (44384121).

68209479 is a wasteful number, since it uses less digits than its factorization.

68209479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6752 (or 6746 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 68209479 is about 8258.9030143234. The cubic root of 68209479 is about 408.5842084974.

The spelling of 68209479 in words is "sixty-eight million, two hundred nine thousand, four hundred seventy-nine".