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682669 = 13173089
BaseRepresentation
bin10100110101010101101
31021200110001
42212222231
5133321134
622344301
75542201
oct2465255
91250401
10682669
11426999
1228b091
131ab960
1413ab01
15d7414
hexa6aad

682669 has 8 divisors (see below), whose sum is σ = 778680. Its totient is φ = 592896.

The previous prime is 682657. The next prime is 682673. The reversal of 682669 is 966286.

It can be written as a sum of positive squares in 4 ways, for example, as 213444 + 469225 = 462^2 + 685^2 .

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 682669 - 25 = 682637 is a prime.

It is a super-2 number, since 2×6826692 = 932073927122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (682679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1324 + ... + 1765.

It is an arithmetic number, because the mean of its divisors is an integer number (97335).

2682669 is an apocalyptic number.

682669 is the 442-nd nonagonal number.

It is an amenable number.

682669 is a deficient number, since it is larger than the sum of its proper divisors (96011).

682669 is a wasteful number, since it uses less digits than its factorization.

682669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3119.

The product of its digits is 31104, while the sum is 37.

The square root of 682669 is about 826.2378592149. The cubic root of 682669 is about 88.0514936227.

The spelling of 682669 in words is "six hundred eighty-two thousand, six hundred sixty-nine".

Divisors: 1 13 17 221 3089 40157 52513 682669