867135812 has 6 divisors (see below), whose sum is σ = 1517487678. Its totient is φ = 433567904.

The previous prime is 867135799. The next prime is 867135817. The reversal of 867135812 is 218531768.

It can be written as a sum of positive squares in only one way, i.e., 789272836 + 77862976 = 28094^2 + 8824^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 867135812.

It is not an unprimeable number, because it can be changed into a prime (867135817) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108391973 + ... + 108391980.

It is an arithmetic number, because the mean of its divisors is an integer number (252914613).

Almost surely, 2^867135812 is an apocalyptic number.

It is an amenable number.

867135812 is a deficient number, since it is larger than the sum of its proper divisors (650351866).

867135812 is a wasteful number, since it uses less digits than its factorization.

867135812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 216783957 (or 216783955 counting only the distinct ones).

The product of its digits is 80640, while the sum is 41.

The square root of 867135812 is about 29447.1698470328. The cubic root of 867135812 is about 953.5915064654.

The spelling of 867135812 in words is "eight hundred sixty-seven million, one hundred thirty-five thousand, eight hundred twelve".