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680950 = 25213619
BaseRepresentation
bin10100110001111110110
31021121002101
42212033312
5133242300
622332314
75534164
oct2461766
91247071
10680950
11425676
1228a09a
131aac3a
1413a234
15d6b6a
hexa63f6

680950 has 12 divisors (see below), whose sum is σ = 1266660. Its totient is φ = 272360.

The previous prime is 680929. The next prime is 680959. The reversal of 680950 is 59086.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (680959) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6760 + ... + 6859.

It is an arithmetic number, because the mean of its divisors is an integer number (105555).

2680950 is an apocalyptic number.

680950 is a deficient number, since it is larger than the sum of its proper divisors (585710).

680950 is a wasteful number, since it uses less digits than its factorization.

680950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13631 (or 13626 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 680950 is about 825.1969461892. The cubic root of 680950 is about 87.9775252523.

It can be divided in two parts, 6809 and 50, that added together give a cube (6859 = 193).

The spelling of 680950 in words is "six hundred eighty thousand, nine hundred fifty".

Divisors: 1 2 5 10 25 50 13619 27238 68095 136190 340475 680950