727685057 has 8 divisors (see below), whose sum is σ = 805687392. Its totient is φ = 651657600.

The previous prime is 727685033. The next prime is 727685059. The reversal of 727685057 is 750586727.

It is a happy number.

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

It is not a de Polignac number, because 727685057 - 2²⁶ = 660576193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727685059) 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, 492944 + ... + 494417.

It is an arithmetic number, because the mean of its divisors is an integer number (100710924).

Almost surely, 2^727685057 is an apocalyptic number.

It is an amenable number.

727685057 is a deficient number, since it is larger than the sum of its proper divisors (78002335).

727685057 is a wasteful number, since it uses less digits than its factorization.

727685057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987439.

The product of its (nonzero) digits is 823200, while the sum is 47.

The square root of 727685057 is about 26975.6382130247. The cubic root of 727685057 is about 899.4585455110.

The spelling of 727685057 in words is "seven hundred twenty-seven million, six hundred eighty-five thousand, fifty-seven".