708739 has 4 divisors (see below), whose sum is σ = 710424. Its totient is φ = 707056.

The previous prime is 708733. The next prime is 708751. The reversal of 708739 is 937807.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 937807 = 13 ⋅72139.

It is a cyclic number.

It is not a de Polignac number, because 708739 - 2¹⁷ = 577667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (708733) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 399 + ... + 1255.

It is an arithmetic number, because the mean of its divisors is an integer number (177606).

2⁷⁰⁸⁷³⁹ is an apocalyptic number.

708739 is a deficient number, since it is larger than the sum of its proper divisors (1685).

708739 is an equidigital number, since it uses as much as digits as its factorization.

708739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1684.

The product of its (nonzero) digits is 10584, while the sum is 34.

The square root of 708739 is about 841.8663789462. The cubic root of 708739 is about 89.1583680323.

The spelling of 708739 in words is "seven hundred eight thousand, seven hundred thirty-nine".