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87586993 = 1313151431
BaseRepresentation
bin1010011100001…
…11100010110001
320002210212202201
411032013202301
5134410240433
612405143201
72112322444
oct516074261
9202725681
1087586993
114549344a
12253bab01
13151b8830
14b8bd65b
157a51a7d
hex53878b1

87586993 has 8 divisors (see below), whose sum is σ = 95046336. Its totient is φ = 80230800.

The previous prime is 87586987. The next prime is 87586999. The reversal of 87586993 is 39968578.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (87586987) and next prime (87586999).

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

It is a de Polignac number, because none of the positive numbers 2k-87586993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87586999) 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, 24013 + ... + 27418.

It is an arithmetic number, because the mean of its divisors is an integer number (11880792).

Almost surely, 287586993 is an apocalyptic number.

It is an amenable number.

87586993 is a deficient number, since it is larger than the sum of its proper divisors (7459343).

87586993 is a wasteful number, since it uses less digits than its factorization.

87586993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51575.

The product of its digits is 3265920, while the sum is 55.

The square root of 87586993 is about 9358.7922831955. The cubic root of 87586993 is about 444.0990786789.

It can be divided in two parts, 8758 and 6993, that added together give a palindrome (15751).

The spelling of 87586993 in words is "eighty-seven million, five hundred eighty-six thousand, nine hundred ninety-three".

Divisors: 1 13 131 1703 51431 668603 6737461 87586993