726161797 has 4 divisors (see below), whose sum is σ = 741612096. Its totient is φ = 710711500.

The previous prime is 726161789. The next prime is 726161803. The reversal of 726161797 is 797161627.

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 726161797 - 2³ = 726161789 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (726161717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7725079 + ... + 7725172.

It is an arithmetic number, because the mean of its divisors is an integer number (185403024).

Almost surely, 2^726161797 is an apocalyptic number.

It is an amenable number.

726161797 is a deficient number, since it is larger than the sum of its proper divisors (15450299).

726161797 is a wasteful number, since it uses less digits than its factorization.

726161797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15450298.

The product of its digits is 222264, while the sum is 46.

The square root of 726161797 is about 26947.3894282916. The cubic root of 726161797 is about 898.8304961744.

The spelling of 726161797 in words is "seven hundred twenty-six million, one hundred sixty-one thousand, seven hundred ninety-seven".