87241864 has 16 divisors (see below), whose sum is σ = 164105820. Its totient is φ = 43480320.

The previous prime is 87241859. The next prime is 87241867. The reversal of 87241864 is 46814278.

It can be written as a sum of positive squares in 2 ways, for example, as 63329764 + 23912100 = 7958^2 + 4890^2 .

It is a super-2 number, since 2×87241864² = 15222285668388992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (87241867) by changing a digit.

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, 14917 + ... + 19924.

Almost surely, 2^87241864 is an apocalyptic number.

It is an amenable number.

87241864 is a deficient number, since it is larger than the sum of its proper divisors (76863956).

87241864 is a wasteful number, since it uses less digits than its factorization.

87241864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35160 (or 35156 counting only the distinct ones).

The product of its digits is 86016, while the sum is 40.

The square root of 87241864 is about 9340.3353258863. The cubic root of 87241864 is about 443.5149994482.

The spelling of 87241864 in words is "eighty-seven million, two hundred forty-one thousand, eight hundred sixty-four".