71012656 has 80 divisors (see below), whose sum is σ = 165801888. Its totient is φ = 29030400.

The previous prime is 71012653. The next prime is 71012681. The reversal of 71012656 is 65621017.

It is not an unprimeable number, because it can be changed into a prime (71012653) 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, 93430 + ... + 94186.

Almost surely, 2^71012656 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 71012656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82900944).

71012656 is an abundant number, since it is smaller than the sum of its proper divisors (94789232).

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

71012656 is a wasteful number, since it uses less digits than its factorization.

71012656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830 (or 824 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 71012656 is about 8426.9007351458. The cubic root of 71012656 is about 414.1063773253.

It can be divided in two parts, 710 and 12656, that added together give a triangular number (13366 = T₁₆₃).

The spelling of 71012656 in words is "seventy-one million, twelve thousand, six hundred fifty-six".