708921842 has 4 divisors (see below), whose sum is σ = 1063382766. Its totient is φ = 354460920.

The previous prime is 708921833. The next prime is 708921853. The reversal of 708921842 is 248129807.

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

It can be written as a sum of positive squares in only one way, i.e., 640545481 + 68376361 = 25309^2 + 8269^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 708921842.

It is an unprimeable number.

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, 177230459 + ... + 177230462.

Almost surely, 2^708921842 is an apocalyptic number.

708921842 is a deficient number, since it is larger than the sum of its proper divisors (354460924).

708921842 is a wasteful number, since it uses less digits than its factorization.

708921842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 354460923.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 708921842 is about 26625.5862282880. The cubic root of 708921842 is about 891.6603446180.

The spelling of 708921842 in words is "seven hundred eight million, nine hundred twenty-one thousand, eight hundred forty-two".