68711478 has 16 divisors (see below), whose sum is σ = 149916096. Its totient is φ = 20821640.

The previous prime is 68711473. The next prime is 68711491. The reversal of 68711478 is 87411786.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68711473) 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 7 ways as a sum of consecutive naturals, for example, 520476 + ... + 520607.

It is an arithmetic number, because the mean of its divisors is an integer number (9369756).

Almost surely, 2^68711478 is an apocalyptic number.

68711478 is an abundant number, since it is smaller than the sum of its proper divisors (81204618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68711478 is a wasteful number, since it uses less digits than its factorization.

68711478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1041099.

The product of its digits is 75264, while the sum is 42.

The square root of 68711478 is about 8289.2386863933. The cubic root of 68711478 is about 409.5841073228.

The spelling of 68711478 in words is "sixty-eight million, seven hundred eleven thousand, four hundred seventy-eight".