80557960 has 96 divisors (see below), whose sum is σ = 220138560. Its totient is φ = 26404224.

The previous prime is 80557957. The next prime is 80557973. The reversal of 80557960 is 6975508.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44187 + ... + 45973.

It is an arithmetic number, because the mean of its divisors is an integer number (2293110).

Almost surely, 2^80557960 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 80557960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (110069280).

80557960 is an abundant number, since it is smaller than the sum of its proper divisors (139580600).

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

80557960 is a wasteful number, since it uses less digits than its factorization.

80557960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1835 (or 1824 counting only the distinct ones).

The product of its (nonzero) digits is 75600, while the sum is 40.

The square root of 80557960 is about 8975.4086257953. The cubic root of 80557960 is about 431.8863584255.

The spelling of 80557960 in words is "eighty million, five hundred fifty-seven thousand, nine hundred sixty".