726641741 has 4 divisors (see below), whose sum is σ = 830447712. Its totient is φ = 622835772.

The previous prime is 726641723. The next prime is 726641743. The reversal of 726641741 is 147146627.

It is a happy number.

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: 147146627 = 677 ⋅217351.

It is a cyclic number.

It is not a de Polignac number, because 726641741 - 2²² = 722447437 is a prime.

It is a super-2 number, since 2×726641741² = 1056016439527022162, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 726641695 and 726641704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726641743) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51902975 + ... + 51902988.

It is an arithmetic number, because the mean of its divisors is an integer number (207611928).

Almost surely, 2^726641741 is an apocalyptic number.

It is an amenable number.

726641741 is a deficient number, since it is larger than the sum of its proper divisors (103805971).

726641741 is a wasteful number, since it uses less digits than its factorization.

726641741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103805970.

The product of its digits is 56448, while the sum is 38.

The square root of 726641741 is about 26956.2931613380. The cubic root of 726641741 is about 899.0284746877.

The spelling of 726641741 in words is "seven hundred twenty-six million, six hundred forty-one thousand, seven hundred forty-one".