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57689693 = 160735899
BaseRepresentation
bin1101110000010…
…0011001011101
311000112221101022
43130010121131
5104232032233
65420253525
71300232345
oct334043135
9130487338
1057689693
112a623136
12173a12a5
13bc4b519
147939d25
1550e8398
hex370465d

57689693 has 4 divisors (see below), whose sum is σ = 57727200. Its totient is φ = 57652188.

The previous prime is 57689689. The next prime is 57689707. The reversal of 57689693 is 39698675.

57689693 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 57689693 - 22 = 57689689 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57689603) 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 3 ways as a sum of consecutive naturals, for example, 16343 + ... + 19556.

It is an arithmetic number, because the mean of its divisors is an integer number (14431800).

Almost surely, 257689693 is an apocalyptic number.

It is an amenable number.

57689693 is a deficient number, since it is larger than the sum of its proper divisors (37507).

57689693 is a wasteful number, since it uses less digits than its factorization.

57689693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37506.

The product of its digits is 2449440, while the sum is 53.

The square root of 57689693 is about 7595.3731310581. The cubic root of 57689693 is about 386.3961073819.

The spelling of 57689693 in words is "fifty-seven million, six hundred eighty-nine thousand, six hundred ninety-three".

Divisors: 1 1607 35899 57689693