1603680 has 96 divisors (see below), whose sum is σ = 5461344. Its totient is φ = 393216.

The previous prime is 1603673. The next prime is 1603681. The reversal of 1603680 is 863061.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a zygodrome in base 2.

It is a self number, because there is not a number n which added to its sum of digits gives 1603680.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1603681) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6112 + ... + 6368.

It is an arithmetic number, because the mean of its divisors is an integer number (56889).

2^1603680 is an apocalyptic number.

1603680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1603680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2730672).

1603680 is an abundant number, since it is smaller than the sum of its proper divisors (3857664).

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

1603680 is a wasteful number, since it uses less digits than its factorization.

1603680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 280 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 1603680 is about 1266.3648763291. The cubic root of 1603680 is about 117.0503107466.

The spelling of 1603680 in words is "one million, six hundred three thousand, six hundred eighty".