71388606 has 8 divisors (see below), whose sum is σ = 142777224. Its totient is φ = 23796200.

The previous prime is 71388599. The next prime is 71388607. The reversal of 71388606 is 60688317.

It is a sphenic number, since it is the product of 3 distinct primes.

71388606 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71388607) 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 3 ways as a sum of consecutive naturals, for example, 5949045 + ... + 5949056.

It is an arithmetic number, because the mean of its divisors is an integer number (17847153).

Almost surely, 2^71388606 is an apocalyptic number.

71388606 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

71388606 is a wasteful number, since it uses less digits than its factorization.

71388606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11898106.

The product of its (nonzero) digits is 48384, while the sum is 39.

The square root of 71388606 is about 8449.1778298246. The cubic root of 71388606 is about 414.8358687091.

The spelling of 71388606 in words is "seventy-one million, three hundred eighty-eight thousand, six hundred six".