71530710 has 64 divisors (see below), whose sum is σ = 177472512. Its totient is φ = 18441216.

The previous prime is 71530681. The next prime is 71530717. The reversal of 71530710 is 1703517.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (71530717) 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 31 ways as a sum of consecutive naturals, for example, 136509 + ... + 137031.

It is an arithmetic number, because the mean of its divisors is an integer number (2773008).

Almost surely, 2^71530710 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 71530710, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88736256).

71530710 is an abundant number, since it is smaller than the sum of its proper divisors (105941802).

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

71530710 is a wasteful number, since it uses less digits than its factorization.

71530710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its (nonzero) digits is 735, while the sum is 24.

The square root of 71530710 is about 8457.5829880646. The cubic root of 71530710 is about 415.1109395185.

The spelling of 71530710 in words is "seventy-one million, five hundred thirty thousand, seven hundred ten".