71478686 has 16 divisors (see below), whose sum is σ = 108302400. Its totient is φ = 35380128.

The previous prime is 71478683. The next prime is 71478691. The reversal of 71478686 is 68687417.

It is a self number, because there is not a number n which added to its sum of digits gives 71478686.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71478683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 109136 + ... + 109788.

It is an arithmetic number, because the mean of its divisors is an integer number (6768900).

Almost surely, 2^71478686 is an apocalyptic number.

71478686 is a deficient number, since it is larger than the sum of its proper divisors (36823714).

71478686 is a wasteful number, since it uses less digits than its factorization.

71478686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1123.

The product of its digits is 451584, while the sum is 47.

The square root of 71478686 is about 8454.5068454641. The cubic root of 71478686 is about 415.0102789344.

The spelling of 71478686 in words is "seventy-one million, four hundred seventy-eight thousand, six hundred eighty-six".