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663012553 = 71073472551
BaseRepresentation
bin100111100001001…
…100010011001001
31201012120112020111
4213201030103021
52324212400203
6145442354321
722300341130
oct4741142311
91635515214
10663012553
11310287165
1216605b9a1
13a748bb28
14640aa917
153d31826d
hex2784c4c9

663012553 has 16 divisors (see below), whose sum is σ = 767314944. Its totient is φ = 561142800.

The previous prime is 663012551. The next prime is 663012577. The reversal of 663012553 is 355210366.

It is a cyclic number.

It is not a de Polignac number, because 663012553 - 21 = 663012551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (663012551) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 258628 + ... + 261178.

It is an arithmetic number, because the mean of its divisors is an integer number (47957184).

Almost surely, 2663012553 is an apocalyptic number.

It is an amenable number.

663012553 is a deficient number, since it is larger than the sum of its proper divisors (104302391).

663012553 is a wasteful number, since it uses less digits than its factorization.

663012553 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3012.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 663012553 is about 25749.0301370751. The cubic root of 663012553 is about 871.9814585353.

The spelling of 663012553 in words is "six hundred sixty-three million, twelve thousand, five hundred fifty-three".

Divisors: 1 7 107 347 749 2429 2551 17857 37129 259903 272957 885197 1910699 6196379 94716079 663012553