87748565 has 8 divisors (see below), whose sum is σ = 109876608. Its totient is φ = 67146640.

The previous prime is 87748559. The next prime is 87748567. The reversal of 87748565 is 56584778.

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

It is not a de Polignac number, because 87748565 - 2⁶ = 87748501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87748567) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 381401 + ... + 381630.

It is an arithmetic number, because the mean of its divisors is an integer number (13734576).

Almost surely, 2^87748565 is an apocalyptic number.

It is an amenable number.

87748565 is a deficient number, since it is larger than the sum of its proper divisors (22128043).

87748565 is a wasteful number, since it uses less digits than its factorization.

87748565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 763059.

The product of its digits is 1881600, while the sum is 50.

The square root of 87748565 is about 9367.4204026509. The cubic root of 87748565 is about 444.3719879221.

The spelling of 87748565 in words is "eighty-seven million, seven hundred forty-eight thousand, five hundred sixty-five".