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87075607 = 711226417
BaseRepresentation
bin1010011000010…
…10101100010111
320001211220021111
411030022230113
5134242404412
612350155451
72105062513
oct514125427
9201756244
1087075607
1145174213
12251b2b87
1315069b38
14b7c9143
1579a02a7
hex530ab17

87075607 has 4 divisors (see below), whose sum is σ = 88302096. Its totient is φ = 85849120.

The previous prime is 87075557. The next prime is 87075619. The reversal of 87075607 is 70657078.

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

It is a cyclic number.

It is not a de Polignac number, because 87075607 - 211 = 87073559 is a prime.

It is a super-2 number, since 2×870756072 = 15164322668836898, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 87075607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87075697) 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 3 ways as a sum of consecutive naturals, for example, 613138 + ... + 613279.

It is an arithmetic number, because the mean of its divisors is an integer number (22075524).

Almost surely, 287075607 is an apocalyptic number.

87075607 is a deficient number, since it is larger than the sum of its proper divisors (1226489).

87075607 is a wasteful number, since it uses less digits than its factorization.

87075607 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1226488.

The product of its (nonzero) digits is 82320, while the sum is 40.

The square root of 87075607 is about 9331.4311335400. The cubic root of 87075607 is about 443.2330844742.

The spelling of 87075607 in words is "eighty-seven million, seventy-five thousand, six hundred seven".

Divisors: 1 71 1226417 87075607