706540608821 has 8 divisors (see below), whose sum is σ = 716700364440. Its totient is φ = 696393856512.

The previous prime is 706540608803. The next prime is 706540608877. The reversal of 706540608821 is 128806045607.

It can be written as a sum of positive squares in 4 ways, for example, as 106334035921 + 600206572900 = 326089^2 + 774730^2 .

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 706540608821 - 2²² = 706536414517 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 (706540608121) 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, 3141350 + ... + 3358743.

It is an arithmetic number, because the mean of its divisors is an integer number (89587545555).

Almost surely, 2^706540608821 is an apocalyptic number.

It is an amenable number.

706540608821 is a deficient number, since it is larger than the sum of its proper divisors (10159755619).

706540608821 is a wasteful number, since it uses less digits than its factorization.

706540608821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6501655.

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 706540608821 in words is "seven hundred six billion, five hundred forty million, six hundred eight thousand, eight hundred twenty-one".