71471764 has 48 divisors (see below), whose sum is σ = 160651008. Its totient is φ = 27042048.

The previous prime is 71471761. The next prime is 71471767. The reversal of 71471764 is 46717417.

It is an interprime number because it is at equal distance from previous prime (71471761) and next prime (71471767).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71471761) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4104 + ... + 12640.

It is an arithmetic number, because the mean of its divisors is an integer number (3346896).

Almost surely, 2^71471764 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 71471764, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80325504).

71471764 is an abundant number, since it is smaller than the sum of its proper divisors (89179244).

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

71471764 is a wasteful number, since it uses less digits than its factorization.

71471764 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8584 (or 8582 counting only the distinct ones).

The product of its digits is 32928, while the sum is 37.

The square root of 71471764 is about 8454.0974680920. The cubic root of 71471764 is about 414.9968819623.

It can be divided in two parts, 7147 and 1764, that added together give a triangular number (8911 = T₁₃₃).

The spelling of 71471764 in words is "seventy-one million, four hundred seventy-one thousand, seven hundred sixty-four".