708997291 has 4 divisors (see below), whose sum is σ = 750703032. Its totient is φ = 667291552.

The previous prime is 708997253. The next prime is 708997313. The reversal of 708997291 is 192799807.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 708997291 - 2⁹ = 708996779 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (708997691) 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 3 ways as a sum of consecutive naturals, for example, 20852845 + ... + 20852878.

It is an arithmetic number, because the mean of its divisors is an integer number (187675758).

Almost surely, 2^708997291 is an apocalyptic number.

708997291 is a deficient number, since it is larger than the sum of its proper divisors (41705741).

708997291 is a wasteful number, since it uses less digits than its factorization.

708997291 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41705740.

The product of its (nonzero) digits is 571536, while the sum is 52.

The square root of 708997291 is about 26627.0030420248. The cubic root of 708997291 is about 891.6919759821.

The spelling of 708997291 in words is "seven hundred eight million, nine hundred ninety-seven thousand, two hundred ninety-one".