982477681 has 4 divisors (see below), whose sum is σ = 982842532. Its totient is φ = 982112832.

The previous prime is 982477679. The next prime is 982477693. The reversal of 982477681 is 186774289.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 186774289 = 13 ⋅14367253.

It can be written as a sum of positive squares in 2 ways, for example, as 877107456 + 105370225 = 29616^2 + 10265^2 .

It is a cyclic number.

It is not a de Polignac number, because 982477681 - 2¹ = 982477679 is a prime.

It is a super-2 number, since 2×982477681² = 1930524787326275522, which contains 22 as substring.

It is the 31345-th Hogben number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (982477081) by changing a digit.

It is a nontrivial repunit in base 31344.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 178356 + ... + 183781.

It is an arithmetic number, because the mean of its divisors is an integer number (245710633).

Almost surely, 2^982477681 is an apocalyptic number.

It is an amenable number.

982477681 is a deficient number, since it is larger than the sum of its proper divisors (364851).

982477681 is a wasteful number, since it uses less digits than its factorization.

982477681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364850.

The product of its digits is 1354752, while the sum is 52.

The square root of 982477681 is about 31344.5000119638. The cubic root of 982477681 is about 994.1247763479.

The spelling of 982477681 in words is "nine hundred eighty-two million, four hundred seventy-seven thousand, six hundred eighty-one".