868763555 has 16 divisors (see below), whose sum is σ = 1165032288. Its totient is φ = 616416000.

The previous prime is 868763531. The next prime is 868763569. The reversal of 868763555 is 555367868.

868763555 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-868763555 is a prime.

It is a super-2 number, since 2×868763555² = 1509500228992476050, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 868763497 and 868763506.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 190376 + ... + 194885.

It is an arithmetic number, because the mean of its divisors is an integer number (72814518).

Almost surely, 2^868763555 is an apocalyptic number.

868763555 is a deficient number, since it is larger than the sum of its proper divisors (296268733).

868763555 is a wasteful number, since it uses less digits than its factorization.

868763555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 385318.

The product of its digits is 6048000, while the sum is 53.

The square root of 868763555 is about 29474.7952495009. The cubic root of 868763555 is about 954.1878112394.

The spelling of 868763555 in words is "eight hundred sixty-eight million, seven hundred sixty-three thousand, five hundred fifty-five".