704266066681 has 4 divisors (see below), whose sum is σ = 704779007652. Its totient is φ = 703753125712.

The previous prime is 704266066661. The next prime is 704266066723. The reversal of 704266066681 is 186660662407.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 472712626681 + 231553440000 = 687541^2 + 481200^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-704266066681 is a prime.

It is a super-2 number, since 2×704266066681² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (704266066661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 256468426 + ... + 256471171.

It is an arithmetic number, because the mean of its divisors is an integer number (176194751913).

Almost surely, 2^704266066681 is an apocalyptic number.

It is an amenable number.

704266066681 is a deficient number, since it is larger than the sum of its proper divisors (512940971).

704266066681 is a wasteful number, since it uses less digits than its factorization.

704266066681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 512940970.

The product of its (nonzero) digits is 3483648, while the sum is 52.

The spelling of 704266066681 in words is "seven hundred four billion, two hundred sixty-six million, sixty-six thousand, six hundred eighty-one".