87385105 has 4 divisors (see below), whose sum is σ = 104862132. Its totient is φ = 69908080.

The previous prime is 87385087. The next prime is 87385121. The reversal of 87385105 is 50158378.

It is a Cunningham number, because it is equal to 9348²+1.

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

It can be written as a sum of positive squares in 2 ways, for example, as 31449664 + 55935441 = 5608^2 + 7479^2 .

It is not a de Polignac number, because 87385105 - 2⁷ = 87384977 is a prime.

It is a super-2 number, since 2×87385105² = 15272313151722050, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8738506 + ... + 8738515.

It is an arithmetic number, because the mean of its divisors is an integer number (26215533).

Almost surely, 2^87385105 is an apocalyptic number.

It is an amenable number.

87385105 is a deficient number, since it is larger than the sum of its proper divisors (17477027).

87385105 is a wasteful number, since it uses less digits than its factorization.

87385105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17477026.

The product of its (nonzero) digits is 33600, while the sum is 37.

The square root of 87385105 is about 9348.0000534874. Note that the first 4 decimals coincide. The cubic root of 87385105 is about 443.7576000814.

The spelling of 87385105 in words is "eighty-seven million, three hundred eighty-five thousand, one hundred five".