57687689 has 2 divisors, whose sum is σ = 57687690. Its totient is φ = 57687688.

The previous prime is 57687661. The next prime is 57687731. The reversal of 57687689 is 98678675.

It is a happy number.

57687689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 53655625 + 4032064 = 7325^2 + 2008^2 .

It is a cyclic number.

It is not a de Polignac number, because 57687689 - 2⁸ = 57687433 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (57687089) 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 as a sum of consecutive naturals, namely, 28843844 + 28843845.

It is an arithmetic number, because the mean of its divisors is an integer number (28843845).

Almost surely, 2^57687689 is an apocalyptic number.

It is an amenable number.

57687689 is a deficient number, since it is larger than the sum of its proper divisors (1).

57687689 is an equidigital number, since it uses as much as digits as its factorization.

57687689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 56.

The square root of 57687689 is about 7595.2412074930. The cubic root of 57687689 is about 386.3916331756.

The spelling of 57687689 in words is "fifty-seven million, six hundred eighty-seven thousand, six hundred eighty-nine".