708505849 has 4 divisors (see below), whose sum is σ = 708696436. Its totient is φ = 708315264.

The previous prime is 708505799. The next prime is 708505867. The reversal of 708505849 is 948505807.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 948505807 = 21013 ⋅45139.

It can be written as a sum of positive squares in 2 ways, for example, as 485541225 + 222964624 = 22035^2 + 14932^2 .

It is a cyclic number.

It is not a de Polignac number, because 708505849 - 2²¹ = 706408697 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 708505799 and 708505808.

It is not an unprimeable number, because it can be changed into a prime (708565849) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 89604 + ... + 97189.

It is an arithmetic number, because the mean of its divisors is an integer number (177174109).

Almost surely, 2^708505849 is an apocalyptic number.

It is an amenable number.

708505849 is a deficient number, since it is larger than the sum of its proper divisors (190587).

708505849 is a wasteful number, since it uses less digits than its factorization.

708505849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 190586.

The product of its (nonzero) digits is 403200, while the sum is 46.

The square root of 708505849 is about 26617.7731788367. The cubic root of 708505849 is about 891.4859027092.

The spelling of 708505849 in words is "seven hundred eight million, five hundred five thousand, eight hundred forty-nine".