727375561 has 8 divisors (see below), whose sum is σ = 794123424. Its totient is φ = 660731520.

The previous prime is 727375553. The next prime is 727375567. The reversal of 727375561 is 165573727.

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 727375561 - 2³ = 727375553 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727375567) 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, 10920 + ... + 39673.

It is an arithmetic number, because the mean of its divisors is an integer number (99265428).

Almost surely, 2^727375561 is an apocalyptic number.

It is an amenable number.

727375561 is a deficient number, since it is larger than the sum of its proper divisors (66747863).

727375561 is a wasteful number, since it uses less digits than its factorization.

727375561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51911.

The product of its digits is 308700, while the sum is 43.

The square root of 727375561 is about 26969.9010194698. The cubic root of 727375561 is about 899.3310094316.

The spelling of 727375561 in words is "seven hundred twenty-seven million, three hundred seventy-five thousand, five hundred sixty-one".