708773720769 has 21 divisors (see below), whose sum is σ = 1062708535699. Its totient is φ = 472500659880.

The previous prime is 708773720747. The next prime is 708773720771. The reversal of 708773720769 is 967027377807.

The square root of 708773720769 is 841887.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 16316741169 + 692456979600 = 127737^2 + 832140^2 .

It is not a de Polignac number, because 708773720769 - 2⁵ = 708773720737 is a prime.

It is a super-2 number, since 2×708773720769² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (708773720729) by changing a digit.

It is a polite number, since it can be written in 20 ways as a sum of consecutive naturals, for example, 22715359 + ... + 22746539.

Almost surely, 2^708773720769 is an apocalyptic number.

708773720769 is the 841887-th square number.

708773720769 is the 420944-th centered octagonal number.

It is an amenable number.

708773720769 is a deficient number, since it is larger than the sum of its proper divisors (353934814930).

708773720769 is an frugal number, since it uses more digits than its factorization.

708773720769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62380 (or 31184 counting only the distinct ones).

The product of its (nonzero) digits is 43563744, while the sum is 63.

The spelling of 708773720769 in words is "seven hundred eight billion, seven hundred seventy-three million, seven hundred twenty thousand, seven hundred sixty-nine".