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87087705 = 355805847
BaseRepresentation
bin1010011000011…
…01101001011001
320001212111212120
411030031221121
5134243301310
612350331453
72105143005
oct514155131
9201774776
1087087705
1145182311
12251b9b89
13150724b3
14b7cd705
1579a3b70
hex530da59

87087705 has 8 divisors (see below), whose sum is σ = 139340352. Its totient is φ = 46446768.

The previous prime is 87087703. The next prime is 87087727. The reversal of 87087705 is 50778078.

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

It is not a de Polignac number, because 87087705 - 21 = 87087703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87087701) 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 7 ways as a sum of consecutive naturals, for example, 2902909 + ... + 2902938.

It is an arithmetic number, because the mean of its divisors is an integer number (17417544).

Almost surely, 287087705 is an apocalyptic number.

It is an amenable number.

87087705 is a deficient number, since it is larger than the sum of its proper divisors (52252647).

87087705 is a wasteful number, since it uses less digits than its factorization.

87087705 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5805855.

The product of its (nonzero) digits is 109760, while the sum is 42.

The square root of 87087705 is about 9332.0793502842. The cubic root of 87087705 is about 443.2536106419.

The spelling of 87087705 in words is "eighty-seven million, eighty-seven thousand, seven hundred five".

Divisors: 1 3 5 15 5805847 17417541 29029235 87087705