57140665 has 8 divisors (see below), whose sum is σ = 69023808. Its totient is φ = 45409200.

The previous prime is 57140659. The next prime is 57140669. The reversal of 57140665 is 56604175.

It is a happy number.

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

It is a de Polignac number, because none of the positive numbers 2^k-57140665 is a prime.

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 57140665.

It is not an unprimeable number, because it can be changed into a prime (57140669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37087 + ... + 38596.

It is an arithmetic number, because the mean of its divisors is an integer number (8627976).

Almost surely, 2^57140665 is an apocalyptic number.

It is an amenable number.

57140665 is a deficient number, since it is larger than the sum of its proper divisors (11883143).

57140665 is a wasteful number, since it uses less digits than its factorization.

57140665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 75839.

The product of its (nonzero) digits is 25200, while the sum is 34.

The square root of 57140665 is about 7559.1444621730. The cubic root of 57140665 is about 385.1664316691.

The spelling of 57140665 in words is "fifty-seven million, one hundred forty thousand, six hundred sixty-five".