726461577 has 6 divisors (see below), whose sum is σ = 1049333402. Its totient is φ = 484307712.

The previous prime is 726461573. The next prime is 726461579. The reversal of 726461577 is 775164627.

726461577 is a `hidden beast` number, since 7 + 26 + 4 + 615 + 7 + 7 = 666.

726461577 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 720600336 + 5861241 = 26844^2 + 2421^2 .

It is not a de Polignac number, because 726461577 - 2² = 726461573 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (726461573) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40358968 + ... + 40358985.

Almost surely, 2^726461577 is an apocalyptic number.

It is an amenable number.

726461577 is a deficient number, since it is larger than the sum of its proper divisors (322871825).

726461577 is a wasteful number, since it uses less digits than its factorization.

726461577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80717959 (or 80717956 counting only the distinct ones).

The product of its digits is 493920, while the sum is 45.

The square root of 726461577 is about 26952.9511742221. The cubic root of 726461577 is about 898.9541666551.

The spelling of 726461577 in words is "seven hundred twenty-six million, four hundred sixty-one thousand, five hundred seventy-seven".