80547656 has 48 divisors (see below), whose sum is σ = 180499200. Its totient is φ = 33007392.

The previous prime is 80547653. The next prime is 80547671. The reversal of 80547656 is 65674508.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80547653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 28265 + ... + 30983.

It is an arithmetic number, because the mean of its divisors is an integer number (3760400).

Almost surely, 2^80547656 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 80547656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (90249600).

80547656 is an abundant number, since it is smaller than the sum of its proper divisors (99951544).

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

80547656 is a wasteful number, since it uses less digits than its factorization.

80547656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2778 (or 2751 counting only the distinct ones).

The product of its (nonzero) digits is 201600, while the sum is 41.

The square root of 80547656 is about 8974.8345945761. The cubic root of 80547656 is about 431.8679437470.

The spelling of 80547656 in words is "eighty million, five hundred forty-seven thousand, six hundred fifty-six".