87432565 has 8 divisors (see below), whose sum is σ = 114457248. Its totient is φ = 63587280.

The previous prime is 87432533. The next prime is 87432577. The reversal of 87432565 is 56523478.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 87432565 - 2⁵ = 87432533 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 794787 + ... + 794896.

It is an arithmetic number, because the mean of its divisors is an integer number (14307156).

Almost surely, 2^87432565 is an apocalyptic number.

It is an amenable number.

87432565 is a deficient number, since it is larger than the sum of its proper divisors (27024683).

87432565 is a wasteful number, since it uses less digits than its factorization.

87432565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1589699.

The product of its digits is 201600, while the sum is 40.

The square root of 87432565 is about 9350.5382198032. The cubic root of 87432565 is about 443.8379224051.

The spelling of 87432565 in words is "eighty-seven million, four hundred thirty-two thousand, five hundred sixty-five".