706791997 has 4 divisors (see below), whose sum is σ = 706880416. Its totient is φ = 706703580.

The previous prime is 706791977. The next prime is 706792043. The reversal of 706791997 is 799197607.

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, and also an emirpimes, since its reverse is a distinct semiprime: 799197607 = 13 ⋅61476739.

It is a cyclic number.

It is not a de Polignac number, because 706791997 - 2²⁷ = 572574269 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 (706791937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30879 + ... + 48652.

It is an arithmetic number, because the mean of its divisors is an integer number (176720104).

Almost surely, 2^706791997 is an apocalyptic number.

It is an amenable number.

706791997 is a deficient number, since it is larger than the sum of its proper divisors (88419).

706791997 is an equidigital number, since it uses as much as digits as its factorization.

706791997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88418.

The product of its (nonzero) digits is 1500282, while the sum is 55.

The square root of 706791997 is about 26585.5599339190. The cubic root of 706791997 is about 890.7664974438.

The spelling of 706791997 in words is "seven hundred six million, seven hundred ninety-one thousand, nine hundred ninety-seven".