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669516 = 22355793
BaseRepresentation
bin10100011011101001100
31021000101220
42203131030
5132411031
622203340
75455641
oct2433514
91230356
10669516
11418021
12283550
131a5983
14135dc8
15d3596
hexa374c

669516 has 12 divisors (see below), whose sum is σ = 1562232. Its totient is φ = 223168.

The previous prime is 669481. The next prime is 669527. The reversal of 669516 is 615966.

669516 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 669516.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27885 + ... + 27908.

It is an arithmetic number, because the mean of its divisors is an integer number (130186).

2669516 is an apocalyptic number.

669516 is the 518-th centered pentagonal number.

It is an amenable number.

669516 is an abundant number, since it is smaller than the sum of its proper divisors (892716).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

669516 is a wasteful number, since it uses less digits than its factorization.

669516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55800 (or 55798 counting only the distinct ones).

The product of its digits is 9720, while the sum is 33.

The square root of 669516 is about 818.2395737191. The cubic root of 669516 is about 87.4823256819.

The spelling of 669516 in words is "six hundred sixty-nine thousand, five hundred sixteen".

Divisors: 1 2 3 4 6 12 55793 111586 167379 223172 334758 669516