707420318681 has 8 divisors (see below), whose sum is σ = 717240188520. Its totient is φ = 697603940352.

The previous prime is 707420318651. The next prime is 707420318867. The reversal of 707420318681 is 186813024707.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 188421105625 + 518999213056 = 434075^2 + 720416^2 .

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 707420318681 - 2³⁴ = 690240449497 is a prime.

It is a super-2 number, since 2×707420318681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (707420318621) 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, 463520 + ... + 1276593.

It is an arithmetic number, because the mean of its divisors is an integer number (89655023565).

Almost surely, 2^707420318681 is an apocalyptic number.

It is an amenable number.

707420318681 is a deficient number, since it is larger than the sum of its proper divisors (9819869839).

707420318681 is a wasteful number, since it uses less digits than its factorization.

707420318681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1745755.

The product of its (nonzero) digits is 451584, while the sum is 47.

The spelling of 707420318681 in words is "seven hundred seven billion, four hundred twenty million, three hundred eighteen thousand, six hundred eighty-one".