726616 has 32 divisors (see below), whose sum is σ = 1555200. Its totient is φ = 315040.

The previous prime is 726611. The next prime is 726619. The reversal of 726616 is 616627.

It is a super-2 number, since 2×726616² = 1055941622912, which contains 22 as substring.

It is a pancake number, because a pancake can be divided into 726616 parts by 1205 straight cuts.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726611) by changing a digit.

726616 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1845 + ... + 2203.

It is an arithmetic number, because the mean of its divisors is an integer number (48600).

2⁷²⁶⁶¹⁶ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 726616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (777600).

726616 is an abundant number, since it is smaller than the sum of its proper divisors (828584).

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

726616 is a wasteful number, since it uses less digits than its factorization.

726616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 395 counting only the distinct ones).

The product of its digits is 3024, while the sum is 28.

The square root of 726616 is about 852.4177379665. The cubic root of 726616 is about 89.9017858651.

The spelling of 726616 in words is "seven hundred twenty-six thousand, six hundred sixteen".