708431 has 4 divisors (see below), whose sum is σ = 723552. Its totient is φ = 693312.

The previous prime is 708403. The next prime is 708437. The reversal of 708431 is 134807.

It is a happy number.

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 708431 - 2¹⁰ = 707407 is a prime.

It is a super-2 number, since 2×708431² = 1003748963522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 708397 and 708406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (708437) 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, 7490 + ... + 7583.

It is an arithmetic number, because the mean of its divisors is an integer number (180888).

2⁷⁰⁸⁴³¹ is an apocalyptic number.

708431 is a deficient number, since it is larger than the sum of its proper divisors (15121).

708431 is a wasteful number, since it uses less digits than its factorization.

708431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15120.

The product of its (nonzero) digits is 672, while the sum is 23.

The square root of 708431 is about 841.6834321763. The cubic root of 708431 is about 89.1454508389.

The spelling of 708431 in words is "seven hundred eight thousand, four hundred thirty-one".