87084136 has 8 divisors (see below), whose sum is σ = 163282770. Its totient is φ = 43542064.

The previous prime is 87084113. The next prime is 87084169. The reversal of 87084136 is 63148078.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 44756100 + 42328036 = 6690^2 + 6506^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 87084095 and 87084104.

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 as a sum of consecutive naturals, namely, 5442751 + ... + 5442766.

Almost surely, 2^87084136 is an apocalyptic number.

It is an amenable number.

87084136 is a deficient number, since it is larger than the sum of its proper divisors (76198634).

87084136 is a wasteful number, since it uses less digits than its factorization.

87084136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10885523 (or 10885519 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 37.

The square root of 87084136 is about 9331.8881262047. Note that the first 3 decimals coincide. The cubic root of 87084136 is about 443.2475554674.

The spelling of 87084136 in words is "eighty-seven million, eighty-four thousand, one hundred thirty-six".