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689294 = 21073221
BaseRepresentation
bin10101000010010001110
31022000112102
42220102032
5134024134
622435102
75600414
oct2502216
91260472
10689294
11430971
12292a92
131b1988
1413d2b4
15d937e
hexa848e

689294 has 8 divisors (see below), whose sum is σ = 1043928. Its totient is φ = 341320.

The previous prime is 689291. The next prime is 689309. The reversal of 689294 is 492986.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (689291) 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, 1397 + ... + 1824.

It is an arithmetic number, because the mean of its divisors is an integer number (130491).

2689294 is an apocalyptic number.

689294 is a deficient number, since it is larger than the sum of its proper divisors (354634).

689294 is a wasteful number, since it uses less digits than its factorization.

689294 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3330.

The product of its digits is 31104, while the sum is 38.

The square root of 689294 is about 830.2373154707. The cubic root of 689294 is about 88.3354107339.

It can be divided in two parts, 689 and 294, that multiplied together give a triangular number (202566 = T636).

The spelling of 689294 in words is "six hundred eighty-nine thousand, two hundred ninety-four".

Divisors: 1 2 107 214 3221 6442 344647 689294