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87106753 = 128967577
BaseRepresentation
bin1010011000100…
…10010011000001
320001220111000001
411030102103001
5134244404003
612351000001
72105252356
oct514222301
9201814001
1087106753
1145195658
1225209001
131507b076
14b7d662d
1579a961d
hex53124c1

87106753 has 4 divisors (see below), whose sum is σ = 87175620. Its totient is φ = 87037888.

The previous prime is 87106751. The next prime is 87106771. The reversal of 87106753 is 35760178.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 54582544 + 32524209 = 7388^2 + 5703^2 .

It is a cyclic number.

It is not a de Polignac number, because 87106753 - 21 = 87106751 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87106751) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32500 + ... + 35077.

It is an arithmetic number, because the mean of its divisors is an integer number (21793905).

Almost surely, 287106753 is an apocalyptic number.

It is an amenable number.

87106753 is a deficient number, since it is larger than the sum of its proper divisors (68867).

87106753 is a wasteful number, since it uses less digits than its factorization.

87106753 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68866.

The product of its (nonzero) digits is 35280, while the sum is 37.

The square root of 87106753 is about 9333.0998601751. The cubic root of 87106753 is about 443.2859247299.

The spelling of 87106753 in words is "eighty-seven million, one hundred six thousand, seven hundred fifty-three".

Divisors: 1 1289 67577 87106753