727729361 has 4 divisors (see below), whose sum is σ = 759369792. Its totient is φ = 696088932.

The previous prime is 727729351. The next prime is 727729367. The reversal of 727729361 is 163927727.

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 727729361 - 2¹⁸ = 727467217 is a prime.

It is a super-2 number, since 2×727729361² = 1059180045722936642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727729367) 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, 15820181 + ... + 15820226.

It is an arithmetic number, because the mean of its divisors is an integer number (189842448).

Almost surely, 2^727729361 is an apocalyptic number.

It is an amenable number.

727729361 is a deficient number, since it is larger than the sum of its proper divisors (31640431).

727729361 is a wasteful number, since it uses less digits than its factorization.

727729361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31640430.

The product of its digits is 222264, while the sum is 44.

The square root of 727729361 is about 26976.4593859165. The cubic root of 727729361 is about 899.4767991966.

The spelling of 727729361 in words is "seven hundred twenty-seven million, seven hundred twenty-nine thousand, three hundred sixty-one".