2706218981 has 8 divisors (see below), whose sum is σ = 2772952728. Its totient is φ = 2639520000.

The previous prime is 2706218959. The next prime is 2706218993. The reversal of 2706218981 is 1898126072.

It can be written as a sum of positive squares in 4 ways, for example, as 862890625 + 1843328356 = 29375^2 + 42934^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2706218981 - 2⁶ = 2706218917 is a prime.

It is a super-2 number, since 2×2706218981² = 14647242346249356722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2706218381) 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, 225431 + ... + 237131.

It is an arithmetic number, because the mean of its divisors is an integer number (346619091).

Almost surely, 2^2706218981 is an apocalyptic number.

It is an amenable number.

2706218981 is a deficient number, since it is larger than the sum of its proper divisors (66733747).

2706218981 is a wasteful number, since it uses less digits than its factorization.

2706218981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17383.

The product of its (nonzero) digits is 96768, while the sum is 44.

The square root of 2706218981 is about 52021.3319802559. The cubic root of 2706218981 is about 1393.5449396584.

The spelling of 2706218981 in words is "two billion, seven hundred six million, two hundred eighteen thousand, nine hundred eighty-one".