983780 has 24 divisors (see below), whose sum is σ = 2361408. Its totient is φ = 337248.

The previous prime is 983777. The next prime is 983783. The reversal of 983780 is 87389.

It is an interprime number because it is at equal distance from previous prime (983777) and next prime (983783).

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a self number, because there is not a number n which added to its sum of digits gives 983780.

It is not an unprimeable number, because it can be changed into a prime (983783) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3374 + ... + 3653.

It is an arithmetic number, because the mean of its divisors is an integer number (98392).

2⁹⁸³⁷⁸⁰ is an apocalyptic number.

It is an amenable number.

983780 is an abundant number, since it is smaller than the sum of its proper divisors (1377628).

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

983780 is a wasteful number, since it uses less digits than its factorization.

983780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7043 (or 7041 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 983780 is about 991.8568445093. The cubic root of 983780 is about 99.4563834993.

The spelling of 983780 in words is "nine hundred eighty-three thousand, seven hundred eighty".