726195901 has 8 divisors (see below), whose sum is σ = 730165304. Its totient is φ = 722234880.

The previous prime is 726195871. The next prime is 726195947. The reversal of 726195901 is 109591627.

It can be written as a sum of positive squares in 4 ways, for example, as 629959801 + 96236100 = 25099^2 + 9810^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 726195901 - 2¹⁵ = 726163133 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 (726195971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 247495 + ... + 250411.

It is an arithmetic number, because the mean of its divisors is an integer number (91270663).

Almost surely, 2^726195901 is an apocalyptic number.

It is an amenable number.

726195901 is a deficient number, since it is larger than the sum of its proper divisors (3969403).

726195901 is a wasteful number, since it uses less digits than its factorization.

726195901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4191.

The product of its (nonzero) digits is 34020, while the sum is 40.

The square root of 726195901 is about 26948.0222094313. The cubic root of 726195901 is about 898.8445670676.

The spelling of 726195901 in words is "seven hundred twenty-six million, one hundred ninety-five thousand, nine hundred one".