87681059 has 2 divisors, whose sum is σ = 87681060. Its totient is φ = 87681058.

The previous prime is 87680993. The next prime is 87681079. The reversal of 87681059 is 95018678.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 87681059 - 2¹⁶ = 87615523 is a prime.

It is a super-2 number, since 2×87681059² = 15375936214722962, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87681079) 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 as a sum of consecutive naturals, namely, 43840529 + 43840530.

It is an arithmetic number, because the mean of its divisors is an integer number (43840530).

Almost surely, 2^87681059 is an apocalyptic number.

87681059 is a deficient number, since it is larger than the sum of its proper divisors (1).

87681059 is an equidigital number, since it uses as much as digits as its factorization.

87681059 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 87681059 is about 9363.8164762024. The cubic root of 87681059 is about 444.2580051606.

The spelling of 87681059 in words is "eighty-seven million, six hundred eighty-one thousand, fifty-nine".