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487660479 = 3198555447
BaseRepresentation
bin11101000100010…
…001101110111111
31020222121201102020
4131010101232333
51444320113404
6120220131223
715041021445
oct3504215677
91228551366
10487660479
112302a9599
12117396b13
137a0546c7
1448aa2b95
152cc2bed9
hex1d111bbf

487660479 has 8 divisors (see below), whose sum is σ = 684435840. Its totient is φ = 307996056.

The previous prime is 487660477. The next prime is 487660489. The reversal of 487660479 is 974066784.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 487660479 - 21 = 487660477 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (487660471) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4277667 + ... + 4277780.

It is an arithmetic number, because the mean of its divisors is an integer number (85554480).

Almost surely, 2487660479 is an apocalyptic number.

487660479 is a deficient number, since it is larger than the sum of its proper divisors (196775361).

487660479 is a wasteful number, since it uses less digits than its factorization.

487660479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8555469.

The product of its (nonzero) digits is 2032128, while the sum is 51.

The square root of 487660479 is about 22083.0360005141. The cubic root of 487660479 is about 787.1168090880.

The spelling of 487660479 in words is "four hundred eighty-seven million, six hundred sixty thousand, four hundred seventy-nine".

Divisors: 1 3 19 57 8555447 25666341 162553493 487660479