708322649 has 2 divisors, whose sum is σ = 708322650. Its totient is φ = 708322648.

The previous prime is 708322639. The next prime is 708322669. The reversal of 708322649 is 946223807.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 468289600 + 240033049 = 21640^2 + 15493^2 .

It is a cyclic number.

It is not a de Polignac number, because 708322649 - 2²⁸ = 439887193 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (708322619) 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 as a sum of consecutive naturals, namely, 354161324 + 354161325.

It is an arithmetic number, because the mean of its divisors is an integer number (354161325).

Almost surely, 2^708322649 is an apocalyptic number.

It is an amenable number.

708322649 is a deficient number, since it is larger than the sum of its proper divisors (1).

708322649 is an equidigital number, since it uses as much as digits as its factorization.

708322649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 41.

The square root of 708322649 is about 26614.3316466899. The cubic root of 708322649 is about 891.4090582267.

The spelling of 708322649 in words is "seven hundred eight million, three hundred twenty-two thousand, six hundred forty-nine".