864820814276 has 24 divisors (see below), whose sum is σ = 1517009810904. Its totient is φ = 431390635520.

The previous prime is 864820814267. The next prime is 864820814293. The reversal of 864820814276 is 672418028468.

It can be written as a sum of positive squares in 4 ways, for example, as 33485340100 + 831335474176 = 182990^2 + 911776^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2760956 + ... + 3058188.

It is an arithmetic number, because the mean of its divisors is an integer number (63208742121).

Almost surely, 2^864820814276 is an apocalyptic number.

It is an amenable number.

864820814276 is a deficient number, since it is larger than the sum of its proper divisors (652188996628).

864820814276 is a wasteful number, since it uses less digits than its factorization.

864820814276 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298951 (or 298949 counting only the distinct ones).

The product of its (nonzero) digits is 8257536, while the sum is 56.

The spelling of 864820814276 in words is "eight hundred sixty-four billion, eight hundred twenty million, eight hundred fourteen thousand, two hundred seventy-six".