7285746861 has 6 divisors (see below), whose sum is σ = 10523856590. Its totient is φ = 4857164568.

The previous prime is 7285746841. The next prime is 7285746887. The reversal of 7285746861 is 1686475827.

7285746861 is a `hidden beast` number, since 7 + 2 + 8 + 574 + 6 + 8 + 61 = 666.

It can be written as a sum of positive squares in only one way, i.e., 6416971236 + 868775625 = 80106^2 + 29475^2 .

It is not a de Polignac number, because 7285746861 - 2⁷ = 7285746733 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 7285746798 and 7285746807.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7285746841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 404763706 + ... + 404763723.

Almost surely, 2^7285746861 is an apocalyptic number.

It is an amenable number.

7285746861 is a deficient number, since it is larger than the sum of its proper divisors (3238109729).

7285746861 is a wasteful number, since it uses less digits than its factorization.

7285746861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 809527435 (or 809527432 counting only the distinct ones).

The product of its digits is 4515840, while the sum is 54.

The square root of 7285746861 is about 85356.5865121140. The cubic root of 7285746861 is about 1938.6140649479.

The spelling of 7285746861 in words is "seven billion, two hundred eighty-five million, seven hundred forty-six thousand, eight hundred sixty-one".