654080 has 72 divisors (see below), whose sum is σ = 1815072. Its totient is φ = 221184.

The previous prime is 654067. The next prime is 654089. The reversal of 654080 is 80456.

It is not an unprimeable number, because it can be changed into a prime (654089) by changing a digit.

654080 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8924 + ... + 8996.

2⁶⁵⁴⁰⁸⁰ 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 654080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (907536).

654080 is an abundant number, since it is smaller than the sum of its proper divisors (1160992).

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

654080 is an equidigital number, since it uses as much as digits as its factorization.

654080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101 (or 87 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 23.

The square root of 654080 is about 808.7521251904. The cubic root of 654080 is about 86.8047765074.

The spelling of 654080 in words is "six hundred fifty-four thousand, eighty".