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87679 is a prime number
BaseRepresentation
bin10101011001111111
311110021101
4111121333
510301204
61513531
7513424
oct253177
9143241
1087679
115a969
12428a7
1330ba7
1423d4b
151aea4
hex1567f

87679 has 2 divisors, whose sum is σ = 87680. Its totient is φ = 87678.

The previous prime is 87671. The next prime is 87683. The reversal of 87679 is 97678.

Subtracting 87679 from its reverse (97678), we obtain a palindrome (9999).

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87679 - 23 = 87671 is a prime.

It is an Ulam number.

It is a plaindrome in base 16.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43839 + 43840.

It is an arithmetic number, because the mean of its divisors is an integer number (43840).

287679 is an apocalyptic number.

87679 is a deficient number, since it is larger than the sum of its proper divisors (1).

87679 is an equidigital number, since it uses as much as digits as its factorization.

87679 is an evil number, because the sum of its binary digits is even.

The product of its digits is 21168, while the sum is 37.

The square root of 87679 is about 296.1063997957. The cubic root of 87679 is about 44.4254527654.

The spelling of 87679 in words is "eighty-seven thousand, six hundred seventy-nine".