726737 has 4 divisors (see below), whose sum is σ = 792816. Its totient is φ = 660660.

The previous prime is 726707. The next prime is 726751. The reversal of 726737 is 737627.

726737 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, and also an emirpimes, since its reverse is a distinct semiprime: 737627 = 11 ⋅67057.

It is not a de Polignac number, because 726737 - 2¹⁶ = 661201 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 726737.

It is not an unprimeable number, because it can be changed into a prime (726707) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33023 + ... + 33044.

It is an arithmetic number, because the mean of its divisors is an integer number (198204).

2⁷²⁶⁷³⁷ is an apocalyptic number.

It is an amenable number.

726737 is a deficient number, since it is larger than the sum of its proper divisors (66079).

726737 is a wasteful number, since it uses less digits than its factorization.

726737 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66078.

The product of its digits is 12348, while the sum is 32.

The square root of 726737 is about 852.4887096027. The cubic root of 726737 is about 89.9067758976.

The spelling of 726737 in words is "seven hundred twenty-six thousand, seven hundred thirty-seven".