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87669743 = 719659171
BaseRepresentation
bin1010011100110…
…11101111101111
320002222002021112
411032123233233
5134420412433
612411022235
72113115630
oct516335757
9202862245
1087669743
114553a637
122543a97b
13152173b5
14b901887
157a6b348
hex539bbef

87669743 has 8 divisors (see below), whose sum is σ = 105467520. Its totient is φ = 71190360.

The previous prime is 87669719. The next prime is 87669763. The reversal of 87669743 is 34796678.

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

It is a cyclic number.

It is not a de Polignac number, because 87669743 - 214 = 87653359 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87669691 and 87669700.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87669763) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 329453 + ... + 329718.

It is an arithmetic number, because the mean of its divisors is an integer number (13183440).

Almost surely, 287669743 is an apocalyptic number.

87669743 is a deficient number, since it is larger than the sum of its proper divisors (17797777).

87669743 is a wasteful number, since it uses less digits than its factorization.

87669743 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 659197.

The product of its digits is 1524096, while the sum is 50.

The square root of 87669743 is about 9363.2122159011. The cubic root of 87669743 is about 444.2388925574.

The spelling of 87669743 in words is "eighty-seven million, six hundred sixty-nine thousand, seven hundred forty-three".

Divisors: 1 7 19 133 659171 4614197 12524249 87669743