726186 has 16 divisors (see below), whose sum is σ = 1465344. Its totient is φ = 239904.

The previous prime is 726181. The next prime is 726191. The reversal of 726186 is 681627.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (726181) and next prime (726191).

It is a super-2 number, since 2×726186² = 1054692213192, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (726181) by changing a digit.

726186 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, 286 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (91584).

2⁷²⁶¹⁸⁶ is an apocalyptic number.

726186 is an abundant number, since it is smaller than the sum of its proper divisors (739158).

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

726186 is a wasteful number, since it uses less digits than its factorization.

726186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1085.

The product of its digits is 4032, while the sum is 30.

The square root of 726186 is about 852.1654768881. The cubic root of 726186 is about 89.8840482082.

The spelling of 726186 in words is "seven hundred twenty-six thousand, one hundred eighty-six".