71018064 has 120 divisors (see below), whose sum is σ = 218006880. Its totient is φ = 21447936.

The previous prime is 71018063. The next prime is 71018083. The reversal of 71018064 is 46081017.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71018063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110127 + ... + 110769.

It is an arithmetic number, because the mean of its divisors is an integer number (1816724).

Almost surely, 2^71018064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71018064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (109003440).

71018064 is an abundant number, since it is smaller than the sum of its proper divisors (146988816).

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

71018064 is a wasteful number, since it uses less digits than its factorization.

71018064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729 (or 720 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 71018064 is about 8427.2216061998. The cubic root of 71018064 is about 414.1168892095.

The spelling of 71018064 in words is "seventy-one million, eighteen thousand, sixty-four".