87732609 has 4 divisors (see below), whose sum is σ = 116976816. Its totient is φ = 58488404.

The previous prime is 87732607. The next prime is 87732613. The reversal of 87732609 is 90623778.

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.

It is a cyclic number.

It is not a de Polignac number, because 87732609 - 2¹ = 87732607 is a prime.

It is not an unprimeable number, because it can be changed into a prime (87732607) 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, 14622099 + ... + 14622104.

It is an arithmetic number, because the mean of its divisors is an integer number (29244204).

Almost surely, 2^87732609 is an apocalyptic number.

It is an amenable number.

87732609 is a deficient number, since it is larger than the sum of its proper divisors (29244207).

87732609 is a wasteful number, since it uses less digits than its factorization.

87732609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29244206.

The product of its (nonzero) digits is 127008, while the sum is 42.

The square root of 87732609 is about 9366.5686886928. The cubic root of 87732609 is about 444.3450517579.

The spelling of 87732609 in words is "eighty-seven million, seven hundred thirty-two thousand, six hundred nine".