87886609 has 4 divisors (see below), whose sum is σ = 92512240. Its totient is φ = 83260980.

The previous prime is 87886597. The next prime is 87886637. The reversal of 87886609 is 90668878.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 90668878 = 2 ⋅45334439.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87886609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (87886639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2312787 + ... + 2312824.

It is an arithmetic number, because the mean of its divisors is an integer number (23128060).

Almost surely, 2^87886609 is an apocalyptic number.

It is an amenable number.

87886609 is a deficient number, since it is larger than the sum of its proper divisors (4625631).

87886609 is a wasteful number, since it uses less digits than its factorization.

87886609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4625630.

The product of its (nonzero) digits is 1161216, while the sum is 52.

The square root of 87886609 is about 9374.7858108866. The cubic root of 87886609 is about 444.6048910548.

The spelling of 87886609 in words is "eighty-seven million, eight hundred eighty-six thousand, six hundred nine".