57709705 has 4 divisors (see below), whose sum is σ = 69251652. Its totient is φ = 46167760.

The previous prime is 57709703. The next prime is 57709711. The reversal of 57709705 is 50790775.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 24393721 + 33315984 = 4939^2 + 5772^2 .

It is not a de Polignac number, because 57709705 - 2¹ = 57709703 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57709703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5770966 + ... + 5770975.

It is an arithmetic number, because the mean of its divisors is an integer number (17312913).

Almost surely, 2^57709705 is an apocalyptic number.

It is an amenable number.

57709705 is a deficient number, since it is larger than the sum of its proper divisors (11541947).

57709705 is a wasteful number, since it uses less digits than its factorization.

57709705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11541946.

The product of its (nonzero) digits is 77175, while the sum is 40.

The square root of 57709705 is about 7596.6903977982. The cubic root of 57709705 is about 386.4407812486.

The spelling of 57709705 in words is "fifty-seven million, seven hundred nine thousand, seven hundred five".