867936505 has 16 divisors (see below), whose sum is σ = 1079600400. Its totient is φ = 669061120.

The previous prime is 867936497. The next prime is 867936521. The reversal of 867936505 is 505639768.

It can be written as a sum of positive squares in 8 ways, for example, as 83320384 + 784616121 = 9128^2 + 28011^2 .

It is not a de Polignac number, because 867936505 - 2³ = 867936497 is a prime.

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 15 ways as a sum of consecutive naturals, for example, 69801 + ... + 81289.

It is an arithmetic number, because the mean of its divisors is an integer number (67475025).

Almost surely, 2^867936505 is an apocalyptic number.

It is an amenable number.

867936505 is a deficient number, since it is larger than the sum of its proper divisors (211663895).

867936505 is a wasteful number, since it uses less digits than its factorization.

867936505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12044.

The product of its (nonzero) digits is 1360800, while the sum is 49.

The square root of 867936505 is about 29460.7621252404. The cubic root of 867936505 is about 953.8849242301.

The spelling of 867936505 in words is "eight hundred sixty-seven million, nine hundred thirty-six thousand, five hundred five".