87578361 has 32 divisors (see below), whose sum is σ = 142128000. Its totient is φ = 52968384.

The previous prime is 87578357. The next prime is 87578369. The reversal of 87578361 is 16387578.

It is not a de Polignac number, because 87578361 - 2² = 87578357 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87578369) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18595 + ... + 22823.

It is an arithmetic number, because the mean of its divisors is an integer number (4441500).

Almost surely, 2^87578361 is an apocalyptic number.

It is an amenable number.

87578361 is a deficient number, since it is larger than the sum of its proper divisors (54549639).

87578361 is a wasteful number, since it uses less digits than its factorization.

87578361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4310 (or 4304 counting only the distinct ones).

The product of its digits is 282240, while the sum is 45.

The square root of 87578361 is about 9358.3311012167. The cubic root of 87578361 is about 444.0844890347.

The spelling of 87578361 in words is "eighty-seven million, five hundred seventy-eight thousand, three hundred sixty-one".