726961 has 4 divisors (see below), whose sum is σ = 758592. Its totient is φ = 695332.

The previous prime is 726953. The next prime is 726983. The reversal of 726961 is 169627.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 726961 - 2³ = 726953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726911) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 15781 + ... + 15826.

It is an arithmetic number, because the mean of its divisors is an integer number (189648).

2⁷²⁶⁹⁶¹ is an apocalyptic number.

It is an amenable number.

726961 is a deficient number, since it is larger than the sum of its proper divisors (31631).

726961 is a wasteful number, since it uses less digits than its factorization.

726961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31630.

The product of its digits is 4536, while the sum is 31.

The square root of 726961 is about 852.6200795196. The cubic root of 726961 is about 89.9160121821.

The spelling of 726961 in words is "seven hundred twenty-six thousand, nine hundred sixty-one".