87782747 has 16 divisors (see below), whose sum is σ = 101243520. Its totient is φ = 75389952.

The previous prime is 87782741. The next prime is 87782749. The reversal of 87782747 is 74728778.

It is a cyclic number.

It is not a de Polignac number, because 87782747 - 2¹⁶ = 87717211 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 87782695 and 87782704.

It is not an unprimeable number, because it can be changed into a prime (87782741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17438 + ... + 21900.

It is an arithmetic number, because the mean of its divisors is an integer number (6327720).

Almost surely, 2^87782747 is an apocalyptic number.

87782747 is a deficient number, since it is larger than the sum of its proper divisors (13460773).

87782747 is a wasteful number, since it uses less digits than its factorization.

87782747 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4582.

The product of its digits is 1229312, while the sum is 50.

The square root of 87782747 is about 9369.2447401058. The cubic root of 87782747 is about 444.4296813684.

The spelling of 87782747 in words is "eighty-seven million, seven hundred eighty-two thousand, seven hundred forty-seven".