709946643097 has 4 divisors (see below), whose sum is σ = 751708210356. Its totient is φ = 668185075840.

The previous prime is 709946643089. The next prime is 709946643139. The reversal of 709946643097 is 790346649907.

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 503384574016 + 206562069081 = 709496^2 + 454491^2 .

It is a cyclic number.

It is not a de Polignac number, because 709946643097 - 2³ = 709946643089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (709946643047) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20880783604 + ... + 20880783637.

It is an arithmetic number, because the mean of its divisors is an integer number (187927052589).

Almost surely, 2^709946643097 is an apocalyptic number.

It is an amenable number.

709946643097 is a deficient number, since it is larger than the sum of its proper divisors (41761567259).

709946643097 is a wasteful number, since it uses less digits than its factorization.

709946643097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41761567258.

The product of its (nonzero) digits is 61725888, while the sum is 64.

The spelling of 709946643097 in words is "seven hundred nine billion, nine hundred forty-six million, six hundred forty-three thousand, ninety-seven".