5211720706 has 8 divisors (see below), whose sum is σ = 7818104844. Its totient is φ = 2605685760.

The previous prime is 5211720629. The next prime is 5211720721. The reversal of 5211720706 is 6070271125.

It can be written as a sum of positive squares in 2 ways, for example, as 5134439025 + 77281681 = 71655^2 + 8791^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46095 + ... + 112018.

Almost surely, 2^5211720706 is an apocalyptic number.

5211720706 is a deficient number, since it is larger than the sum of its proper divisors (2606384138).

5211720706 is a wasteful number, since it uses less digits than its factorization.

5211720706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 174596.

The product of its (nonzero) digits is 5880, while the sum is 31.

The square root of 5211720706 is about 72192.2482403755. The cubic root of 5211720706 is about 1733.7788921229.

The spelling of 5211720706 in words is "five billion, two hundred eleven million, seven hundred twenty thousand, seven hundred six".