868601385 has 12 divisors (see below), whose sum is σ = 1505575812. Its totient is φ = 463254048.

The previous prime is 868601347. The next prime is 868601411. The reversal of 868601385 is 583106868.

868601385 is a `hidden beast` number, since 8 + 6 + 8 + 601 + 38 + 5 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 314140176 + 554461209 = 17724^2 + 23547^2 .

It is not a de Polignac number, because 868601385 - 2²² = 864407081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 19302253 = 868601385 / (8 + 6 + 8 + 6 + 0 + 1 + 3 + 8 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 868601385.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9651082 + ... + 9651171.

It is an arithmetic number, because the mean of its divisors is an integer number (125464651).

Almost surely, 2^868601385 is an apocalyptic number.

It is an amenable number.

868601385 is a deficient number, since it is larger than the sum of its proper divisors (636974427).

868601385 is a wasteful number, since it uses less digits than its factorization.

868601385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19302264 (or 19302261 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 868601385 is about 29472.0441265956. The cubic root of 868601385 is about 954.1284355647.

It can be divided in two parts, 868 and 601385, that added together give a triangular number (602253 = T₁₀₉₇).

The spelling of 868601385 in words is "eight hundred sixty-eight million, six hundred one thousand, three hundred eighty-five".