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686374 = 21326399
BaseRepresentation
bin10100111100100100110
31021212112021
42213210212
5133430444
622413354
75556043
oct2474446
91255467
10686374
11429757
1229125a
131b0550
1413c1ca
15d8584
hexa7926

686374 has 8 divisors (see below), whose sum is σ = 1108800. Its totient is φ = 316776.

The previous prime is 686363. The next prime is 686417. The reversal of 686374 is 473686.

686374 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a super-2 number, since 2×6863742 = 942218535752, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

686374 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13174 + ... + 13225.

It is an arithmetic number, because the mean of its divisors is an integer number (138600).

2686374 is an apocalyptic number.

686374 is a deficient number, since it is larger than the sum of its proper divisors (422426).

686374 is a wasteful number, since it uses less digits than its factorization.

686374 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26414.

The product of its digits is 24192, while the sum is 34.

The square root of 686374 is about 828.4769157919. The cubic root of 686374 is about 88.2104981479.

The spelling of 686374 in words is "six hundred eighty-six thousand, three hundred seventy-four".

Divisors: 1 2 13 26 26399 52798 343187 686374