Search a number
-
+
685825 = 5273919
BaseRepresentation
bin10100111011100000001
31021211202221
42213130001
5133421300
622411041
75554330
oct2473401
91254687
10685825
114292a8
12290a81
131b021a
1413bd17
15d831a
hexa7701

685825 has 12 divisors (see below), whose sum is σ = 972160. Its totient is φ = 470160.

The previous prime is 685819. The next prime is 685849. The reversal of 685825 is 528586.

685825 = T140 + T141 + ... + T189.

It is not a de Polignac number, because 685825 - 25 = 685793 is a prime.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

685825 is a lucky number.

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1785 + ... + 2134.

2685825 is an apocalyptic number.

It is an amenable number.

685825 is a deficient number, since it is larger than the sum of its proper divisors (286335).

685825 is a wasteful number, since it uses less digits than its factorization.

685825 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3936 (or 3931 counting only the distinct ones).

The product of its digits is 19200, while the sum is 34.

The square root of 685825 is about 828.1455186137. The cubic root of 685825 is about 88.1869733248.

The spelling of 685825 in words is "six hundred eighty-five thousand, eight hundred twenty-five".

Divisors: 1 5 7 25 35 175 3919 19595 27433 97975 137165 685825