708898325521 has 9 divisors (see below), whose sum is σ = 741080308521. Its totient is φ = 678058136052.

The previous prime is 708898325519. The next prime is 708898325537. The reversal of 708898325521 is 125523898807.

The square root of 708898325521 is 841961.

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

It is not a de Polignac number, because 708898325521 - 2¹ = 708898325519 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (708898325561) 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 8 ways as a sum of consecutive naturals, for example, 19346800 + ... + 19383406.

Almost surely, 2^708898325521 is an apocalyptic number.

708898325521 is the 841961-st square number.

708898325521 is the 420981-st centered octagonal number.

It is an amenable number.

708898325521 is a deficient number, since it is larger than the sum of its proper divisors (32181983000).

708898325521 is an frugal number, since it uses more digits than its factorization.

708898325521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73260 (or 36630 counting only the distinct ones).

The product of its (nonzero) digits is 9676800, while the sum is 58.

The spelling of 708898325521 in words is "seven hundred eight billion, eight hundred ninety-eight million, three hundred twenty-five thousand, five hundred twenty-one".