71063456 has 48 divisors (see below), whose sum is σ = 146853000. Its totient is φ = 33804288.

The previous prime is 71063453. The next prime is 71063459. The reversal of 71063456 is 65436017.

It is an interprime number because it is at equal distance from previous prime (71063453) and next prime (71063459).

It can be written as a sum of positive squares in 4 ways, for example, as 70224400 + 839056 = 8380^2 + 916^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is not an unprimeable number, because it can be changed into a prime (71063453) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67220 + ... + 68268.

Almost surely, 2^71063456 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 71063456, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73426500).

71063456 is an abundant number, since it is smaller than the sum of its proper divisors (75789544).

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

71063456 is a wasteful number, since it uses less digits than its factorization.

71063456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1161 (or 1153 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 71063456 is about 8429.9143530643. The cubic root of 71063456 is about 414.2050995854.

The spelling of 71063456 in words is "seventy-one million, sixty-three thousand, four hundred fifty-six".