706644791 has 4 divisors (see below), whose sum is σ = 706777512. Its totient is φ = 706512072.

The previous prime is 706644749. The next prime is 706644793. The reversal of 706644791 is 197446607.

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

It is a cyclic number.

It is not a de Polignac number, because 706644791 - 2²² = 702450487 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 (706644793) 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, 58025 + ... + 69138.

It is an arithmetic number, because the mean of its divisors is an integer number (176694378).

Almost surely, 2^706644791 is an apocalyptic number.

706644791 is a deficient number, since it is larger than the sum of its proper divisors (132721).

706644791 is a wasteful number, since it uses less digits than its factorization.

706644791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132720.

The product of its (nonzero) digits is 254016, while the sum is 44.

The square root of 706644791 is about 26582.7912567510. The cubic root of 706644791 is about 890.7046521494.

The spelling of 706644791 in words is "seven hundred six million, six hundred forty-four thousand, seven hundred ninety-one".