868378266 has 32 divisors (see below), whose sum is σ = 2205406080. Its totient is φ = 248107968.

The previous prime is 868378229. The next prime is 868378283. The reversal of 868378266 is 662873868.

It is a happy number.

868378266 is a `hidden beast` number, since 8 + 6 + 8 + 378 + 266 = 666.

868378266 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×868378266² = 1508161625722333512, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

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, 1148271 + ... + 1149026.

It is an arithmetic number, because the mean of its divisors is an integer number (68918940).

Almost surely, 2^868378266 is an apocalyptic number.

868378266 is an abundant number, since it is smaller than the sum of its proper divisors (1337027814).

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

868378266 is a wasteful number, since it uses less digits than its factorization.

868378266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2297315 (or 2297309 counting only the distinct ones).

The product of its digits is 4644864, while the sum is 54.

The square root of 868378266 is about 29468.2586183846. The cubic root of 868378266 is about 954.0467324127.

The spelling of 868378266 in words is "eight hundred sixty-eight million, three hundred seventy-eight thousand, two hundred sixty-six".