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35689 = 89401

35689 has 4 divisors (see below), whose sum is σ = 36180. Its totient is φ = 35200.

The previous prime is 35677. The next prime is 35729. The reversal of 35689 is 98653.

It can be divided in two parts, 356 and 89, that multiplied together give a square (31684 = 1782).

35689 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 an emirpimes, since its reverse is a distinct semiprime: 98653 = 472099.

It can be written as a sum of positive squares in 2 ways, for example, as 24025 + 11664 = 155^2 + 108^2 .

It is a cyclic number.

It is not a de Polignac number, because 35689 - 211 = 33641 is a prime.

It is a super-5 number, since 5×356895 (a number of 24 digits) contains 55555 as substring.

It is a Duffinian number.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 35689.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (35089) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112 + ... + 289.

It is an arithmetic number, because the mean of its divisors is an integer number (9045).

235689 is an apocalyptic number.

It is an amenable number.

35689 is a deficient number, since it is larger than the sum of its proper divisors (491).

35689 is an equidigital number, since it uses as much as digits as its factorization.

35689 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490.

The product of its digits is 6480, while the sum is 31.

The square root of 35689 is about 188.9153249474. The cubic root of 35689 is about 32.9239140872.

The spelling of 35689 in words is "thirty-five thousand, six hundred eighty-nine".

Divisors: 1 89 401 35689