80983656 has 96 divisors (see below), whose sum is σ = 243909120. Its totient is φ = 24105600.

The previous prime is 80983619. The next prime is 80983657. The reversal of 80983656 is 65638908.

It is not an unprimeable number, because it can be changed into a prime (80983657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27621 + ... + 30411.

It is an arithmetic number, because the mean of its divisors is an integer number (2540720).

Almost surely, 2^80983656 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 80983656, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121954560).

80983656 is an abundant number, since it is smaller than the sum of its proper divisors (162925464).

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

80983656 is a wasteful number, since it uses less digits than its factorization.

80983656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2847 (or 2840 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 80983656 is about 8999.0919541918. The cubic root of 80983656 is about 432.6457677433.

The spelling of 80983656 in words is "eighty million, nine hundred eighty-three thousand, six hundred fifty-six".