87789655 has 16 divisors (see below), whose sum is σ = 108241920. Its totient is φ = 68320672.

The previous prime is 87789629. The next prime is 87789659. The reversal of 87789655 is 55698778.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87789655 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87789596 and 87789605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87789659) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41022 + ... + 43108.

It is an arithmetic number, because the mean of its divisors is an integer number (6765120).

Almost surely, 2^87789655 is an apocalyptic number.

87789655 is a deficient number, since it is larger than the sum of its proper divisors (20452265).

87789655 is a wasteful number, since it uses less digits than its factorization.

87789655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2318.

The product of its digits is 4233600, while the sum is 55.

The square root of 87789655 is about 9369.6133858340. The cubic root of 87789655 is about 444.4413390871.

The spelling of 87789655 in words is "eighty-seven million, seven hundred eighty-nine thousand, six hundred fifty-five".