708426 has 20 divisors (see below), whose sum is σ = 1587762. Its totient is φ = 236088.

The previous prime is 708403. The next prime is 708437. The reversal of 708426 is 624807.

It can be written as a sum of positive squares in only one way, i.e., 585225 + 123201 = 765^2 + 351^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 708426.

It is an unprimeable number.

708426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 2025 + ... + 2348.

2⁷⁰⁸⁴²⁶ is an apocalyptic number.

708426 is an abundant number, since it is smaller than the sum of its proper divisors (879336).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

708426 is a wasteful number, since it uses less digits than its factorization.

708426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4387 (or 4378 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 708426 is about 841.6804619331. The cubic root of 708426 is about 89.1452411133.

The spelling of 708426 in words is "seven hundred eight thousand, four hundred twenty-six".