71488656 has 100 divisors (see below), whose sum is σ = 208675632. Its totient is φ = 23724576.

The previous prime is 71488639. The next prime is 71488663. The reversal of 71488656 is 65688417.

It is a happy number.

It is a super-2 number, since 2×71488656² = 10221255873372672, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 314815 + ... + 315041.

Almost surely, 2^71488656 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 71488656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (104337816).

71488656 is an abundant number, since it is smaller than the sum of its proper divisors (137186976).

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

71488656 is an frugal number, since it uses more digits than its factorization.

71488656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262 (or 232 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 71488656 is about 8455.0964512535. The cubic root of 71488656 is about 415.0295735445.

Subtracting from 71488656 its product of digits (322560), we obtain a square (71166096 = 8436²).

The spelling of 71488656 in words is "seventy-one million, four hundred eighty-eight thousand, six hundred fifty-six".