68947479 has 12 divisors (see below), whose sum is σ = 100559056. Its totient is φ = 45518112.

The previous prime is 68947469. The next prime is 68947481. The reversal of 68947479 is 97474986.

It is a happy number.

It is not a de Polignac number, because 68947479 - 2¹² = 68943383 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 (68947469) 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 11 ways as a sum of consecutive naturals, for example, 36262 + ... + 38115.

Almost surely, 2^68947479 is an apocalyptic number.

68947479 is a deficient number, since it is larger than the sum of its proper divisors (31611577).

68947479 is a wasteful number, since it uses less digits than its factorization.

68947479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74486 (or 74483 counting only the distinct ones).

The product of its digits is 3048192, while the sum is 54.

The square root of 68947479 is about 8303.4618684016. The cubic root of 68947479 is about 410.0524997218.

The spelling of 68947479 in words is "sixty-eight million, nine hundred forty-seven thousand, four hundred seventy-nine".