980566 has 4 divisors (see below), whose sum is σ = 1470852. Its totient is φ = 490282.

The previous prime is 980557. The next prime is 980579. The reversal of 980566 is 665089.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 980566.

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 as a sum of consecutive naturals, namely, 245140 + ... + 245143.

It is an arithmetic number, because the mean of its divisors is an integer number (367713).

2⁹⁸⁰⁵⁶⁶ is an apocalyptic number.

980566 is a deficient number, since it is larger than the sum of its proper divisors (490286).

980566 is a wasteful number, since it uses less digits than its factorization.

980566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490285.

The product of its (nonzero) digits is 12960, while the sum is 34.

The square root of 980566 is about 990.2353255666. The cubic root of 980566 is about 99.3479576484.

The spelling of 980566 in words is "nine hundred eighty thousand, five hundred sixty-six".