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57068689 = 379715901
BaseRepresentation
bin1101100110110…
…0110010010001
310222101101112011
43121230302101
5104102144224
65355102521
71262035006
oct331546221
9128341464
1057068689
112a239607
1217141a41
13ba91972
1478178ad
155024394
hex366cc91

57068689 has 8 divisors (see below), whose sum is σ = 59219048. Its totient is φ = 54950400.

The previous prime is 57068653. The next prime is 57068707. The reversal of 57068689 is 98686075.

57068689 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37638225 + 19430464 = 6135^2 + 4408^2 .

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 57068689 - 29 = 57068177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (57062689) 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, 4362 + ... + 11539.

It is an arithmetic number, because the mean of its divisors is an integer number (7402381).

Almost surely, 257068689 is an apocalyptic number.

It is an amenable number.

57068689 is a deficient number, since it is larger than the sum of its proper divisors (2150359).

57068689 is a wasteful number, since it uses less digits than its factorization.

57068689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16035.

The product of its (nonzero) digits is 725760, while the sum is 49.

The square root of 57068689 is about 7554.3821057715. The cubic root of 57068689 is about 385.0046415362.

The spelling of 57068689 in words is "fifty-seven million, sixty-eight thousand, six hundred eighty-nine".

Divisors: 1 37 97 3589 15901 588337 1542397 57068689