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675675680 = 2554222973
BaseRepresentation
bin101000010001011…
…111111000100000
31202002101212210012
4220101133320200
52340433110210
6151014024052
722513101641
oct5021377040
91662355705
10675675680
11317446159
1216a348028
13a9ca38c4
1465a456c8
153e4ba305
hex2845fe20

675675680 has 24 divisors (see below), whose sum is σ = 1596284172. Its totient is φ = 270270208.

The previous prime is 675675677. The next prime is 675675691. The reversal of 675675680 is 86576576.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 659256976 + 16418704 = 25676^2 + 4052^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2111327 + ... + 2111646.

Almost surely, 2675675680 is an apocalyptic number.

It is an amenable number.

675675680 is an abundant number, since it is smaller than the sum of its proper divisors (920608492).

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

675675680 is a wasteful number, since it uses less digits than its factorization.

675675680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4222988 (or 4222980 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The square root of 675675680 is about 25993.7623286819. The cubic root of 675675680 is about 877.4979201959.

The spelling of 675675680 in words is "six hundred seventy-five million, six hundred seventy-five thousand, six hundred eighty".

Divisors: 1 2 4 5 8 10 16 20 32 40 80 160 4222973 8445946 16891892 21114865 33783784 42229730 67567568 84459460 135135136 168918920 337837840 675675680