720726 has 8 divisors (see below), whose sum is σ = 1441464. Its totient is φ = 240240.

The previous prime is 720703. The next prime is 720743. The reversal of 720726 is 627027.

It is a sphenic number, since it is the product of 3 distinct primes.

720726 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 720696 and 720705.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60055 + ... + 60066.

It is an arithmetic number, because the mean of its divisors is an integer number (180183).

2⁷²⁰⁷²⁶ is an apocalyptic number.

720726 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

720726 is a wasteful number, since it uses less digits than its factorization.

720726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120126.

The product of its (nonzero) digits is 1176, while the sum is 24.

The square root of 720726 is about 848.9558292397. The cubic root of 720726 is about 89.6582098100.

The spelling of 720726 in words is "seven hundred twenty thousand, seven hundred twenty-six".