71511714 has 32 divisors (see below), whose sum is σ = 159200640. Its totient is φ = 23794416.

The previous prime is 71511691. The next prime is 71511719. The reversal of 71511714 is 41711517.

It is a super-2 number, since 2×71511714² = 10227850478435592, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71511719) 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 15 ways as a sum of consecutive naturals, for example, 47152 + ... + 48644.

It is an arithmetic number, because the mean of its divisors is an integer number (4975020).

Almost surely, 2^71511714 is an apocalyptic number.

71511714 is an abundant number, since it is smaller than the sum of its proper divisors (87688926).

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

71511714 is a wasteful number, since it uses less digits than its factorization.

71511714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2391 (or 2385 counting only the distinct ones).

The product of its digits is 980, while the sum is 27.

The square root of 71511714 is about 8456.4598976167. The cubic root of 71511714 is about 415.0741900555.

The spelling of 71511714 in words is "seventy-one million, five hundred eleven thousand, seven hundred fourteen".