980681 has 4 divisors (see below), whose sum is σ = 1056132. Its totient is φ = 905232.

The previous prime is 980677. The next prime is 980687. The reversal of 980681 is 186089.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186089 = 379 ⋅491.

It can be written as a sum of positive squares in 2 ways, for example, as 614656 + 366025 = 784^2 + 605^2 .

It is a cyclic number.

It is not a de Polignac number, because 980681 - 2² = 980677 is a prime.

It is a super-2 number, since 2×980681² = 1923470447522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 980681.

It is not an unprimeable number, because it can be changed into a prime (980687) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 37706 + ... + 37731.

It is an arithmetic number, because the mean of its divisors is an integer number (264033).

2⁹⁸⁰⁶⁸¹ is an apocalyptic number.

It is an amenable number.

980681 is a deficient number, since it is larger than the sum of its proper divisors (75451).

980681 is a wasteful number, since it uses less digits than its factorization.

980681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75450.

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

The square root of 980681 is about 990.2933908696. The cubic root of 980681 is about 99.3518413131.

It can be divided in two parts, 980 and 681, that added together give a palindrome (1661).

The spelling of 980681 in words is "nine hundred eighty thousand, six hundred eighty-one".