711201665 has 8 divisors (see below), whose sum is σ = 853585128. Its totient is φ = 568865920.

The previous prime is 711201649. The next prime is 711201677. The reversal of 711201665 is 566102117.

It can be written as a sum of positive squares in 4 ways, for example, as 77018176 + 634183489 = 8776^2 + 25183^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 711201665 - 2⁴ = 711201649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 53045 + ... + 65085.

It is an arithmetic number, because the mean of its divisors is an integer number (106698141).

Almost surely, 2^711201665 is an apocalyptic number.

It is an amenable number.

711201665 is a deficient number, since it is larger than the sum of its proper divisors (142383463).

711201665 is a wasteful number, since it uses less digits than its factorization.

711201665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23859.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 711201665 is about 26668.3644980340. The cubic root of 711201665 is about 892.6151525162.

The spelling of 711201665 in words is "seven hundred eleven million, two hundred one thousand, six hundred sixty-five".