706855681 has 4 divisors (see below), whose sum is σ = 807835072. Its totient is φ = 605876292.

The previous prime is 706855679. The next prime is 706855691. The reversal of 706855681 is 186558607.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 706855681 - 2¹ = 706855679 is a prime.

It is a super-2 number, since 2×706855681² = 999289907523947522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (706855691) 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, 50489685 + ... + 50489698.

It is an arithmetic number, because the mean of its divisors is an integer number (201958768).

Almost surely, 2^706855681 is an apocalyptic number.

It is an amenable number.

706855681 is a deficient number, since it is larger than the sum of its proper divisors (100979391).

706855681 is a wasteful number, since it uses less digits than its factorization.

706855681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100979390.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 706855681 is about 26586.7576248026. The cubic root of 706855681 is about 890.7932501849.

The spelling of 706855681 in words is "seven hundred six million, eight hundred fifty-five thousand, six hundred eighty-one".