980861 has 4 divisors (see below), whose sum is σ = 1120992. Its totient is φ = 840732.

The previous prime is 980851. The next prime is 980887. The reversal of 980861 is 168089.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 980861 - 2¹⁸ = 718717 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70055 + ... + 70068.

It is an arithmetic number, because the mean of its divisors is an integer number (280248).

2⁹⁸⁰⁸⁶¹ is an apocalyptic number.

It is an amenable number.

980861 is a deficient number, since it is larger than the sum of its proper divisors (140131).

980861 is a wasteful number, since it uses less digits than its factorization.

980861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140130.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 980861 is about 990.3842688573. The cubic root of 980861 is about 99.3579194831.

The spelling of 980861 in words is "nine hundred eighty thousand, eight hundred sixty-one".