57666005 has 8 divisors (see below), whose sum is σ = 69306072. Its totient is φ = 46061568.

The previous prime is 57665981. The next prime is 57666013. The reversal of 57666005 is 50066675.

It can be written as a sum of positive squares in 4 ways, for example, as 844561 + 56821444 = 919^2 + 7538^2 .

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 57666005 - 2¹⁸ = 57403861 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5204 + ... + 11933.

It is an arithmetic number, because the mean of its divisors is an integer number (8663259).

Almost surely, 2^57666005 is an apocalyptic number.

It is an amenable number.

57666005 is a deficient number, since it is larger than the sum of its proper divisors (11640067).

57666005 is a wasteful number, since it uses less digits than its factorization.

57666005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17815.

The product of its (nonzero) digits is 37800, while the sum is 35.

The square root of 57666005 is about 7593.8136005567. The cubic root of 57666005 is about 386.3432140280.

The spelling of 57666005 in words is "fifty-seven million, six hundred sixty-six thousand, five".