868266642 has 16 divisors (see below), whose sum is σ = 1783467072. Its totient is φ = 281599920.

The previous prime is 868266577. The next prime is 868266647. The reversal of 868266642 is 246662868.

It is a junction number, because it is equal to n+sod(n) for n = 868266591 and 868266600.

It is not an unprimeable number, because it can be changed into a prime (868266647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1955334 + ... + 1955777.

It is an arithmetic number, because the mean of its divisors is an integer number (111466692).

Almost surely, 2^868266642 is an apocalyptic number.

868266642 is an abundant number, since it is smaller than the sum of its proper divisors (915200430).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

868266642 is a wasteful number, since it uses less digits than its factorization.

868266642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911153.

The product of its digits is 1327104, while the sum is 48.

The square root of 868266642 is about 29466.3645874411. The cubic root of 868266642 is about 954.0058519654.

The spelling of 868266642 in words is "eight hundred sixty-eight million, two hundred sixty-six thousand, six hundred forty-two".