87916145 has 8 divisors (see below), whose sum is σ = 105705000. Its totient is φ = 70195840.

The previous prime is 87916141. The next prime is 87916159. The reversal of 87916145 is 54161978.

It can be written as a sum of positive squares in 4 ways, for example, as 17875984 + 70040161 = 4228^2 + 8369^2 .

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

It is not a de Polignac number, because 87916145 - 2² = 87916141 is a prime.

It is a super-2 number, since 2×87916145² = 15458497103322050, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (87916141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14270 + ... + 19479.

It is an arithmetic number, because the mean of its divisors is an integer number (13213125).

Almost surely, 2^87916145 is an apocalyptic number.

It is an amenable number.

87916145 is a deficient number, since it is larger than the sum of its proper divisors (17788855).

87916145 is a wasteful number, since it uses less digits than its factorization.

87916145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34275.

The product of its digits is 60480, while the sum is 41.

The square root of 87916145 is about 9376.3609678809. The cubic root of 87916145 is about 444.6546915095.

The spelling of 87916145 in words is "eighty-seven million, nine hundred sixteen thousand, one hundred forty-five".