867574228426721 has 8 divisors (see below), whose sum is σ = 872077621432200. Its totient is φ = 863070919852032.

The previous prime is 867574228426691. The next prime is 867574228426729. The reversal of 867574228426721 is 127624822475768.

It can be written as a sum of positive squares in 4 ways, for example, as 180073452531025 + 687500775895696 = 13419145^2 + 26220236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 867574228426721 - 2⁶ = 867574228426657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (867574228426729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 450896 + ... + 41657553.

It is an arithmetic number, because the mean of its divisors is an integer number (109009702679025).

Almost surely, 2^{867574228426721} is an apocalyptic number.

It is an amenable number.

867574228426721 is a deficient number, since it is larger than the sum of its proper divisors (4503393005479).

867574228426721 is a wasteful number, since it uses less digits than its factorization.

867574228426721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42215395.

The product of its digits is 1011548160, while the sum is 71.

The spelling of 867574228426721 in words is "eight hundred sixty-seven trillion, five hundred seventy-four billion, two hundred twenty-eight million, four hundred twenty-six thousand, seven hundred twenty-one".