705726 has 32 divisors (see below), whose sum is σ = 1793280. Its totient is φ = 201528.

The previous prime is 705713. The next prime is 705737. The reversal of 705726 is 627507.

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 705726.

It is a congruent number.

It is an unprimeable 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 15 ways as a sum of consecutive naturals, for example, 556 + ... + 1311.

It is an arithmetic number, because the mean of its divisors is an integer number (56040).

2⁷⁰⁵⁷²⁶ is an apocalyptic number.

705726 is an abundant number, since it is smaller than the sum of its proper divisors (1087554).

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

705726 is a wasteful number, since it uses less digits than its factorization.

705726 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1885 (or 1879 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 27.

The square root of 705726 is about 840.0749966521. The cubic root of 705726 is about 89.0318448514.

It can be divided in two parts, 705 and 726, that added together give a triangular number (1431 = T₅₃).

The spelling of 705726 in words is "seven hundred five thousand, seven hundred twenty-six".