57705661 has 8 divisors (see below), whose sum is σ = 62203680. Its totient is φ = 53216112.

The previous prime is 57705617. The next prime is 57705671. The reversal of 57705661 is 16650775.

57705661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 57705661 - 2⁹ = 57705149 is a prime.

It is a super-2 number, since 2×57705661² = 6659886622893842, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 57705661.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57705671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24606 + ... + 26848.

It is an arithmetic number, because the mean of its divisors is an integer number (7775460).

Almost surely, 2^57705661 is an apocalyptic number.

It is an amenable number.

57705661 is a deficient number, since it is larger than the sum of its proper divisors (4498019).

57705661 is a wasteful number, since it uses less digits than its factorization.

57705661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4235.

The product of its (nonzero) digits is 44100, while the sum is 37.

The square root of 57705661 is about 7596.4242245941. The cubic root of 57705661 is about 386.4317544420.

The spelling of 57705661 in words is "fifty-seven million, seven hundred five thousand, six hundred sixty-one".