7856908061 has 2 divisors, whose sum is σ = 7856908062. Its totient is φ = 7856908060.

The previous prime is 7856908051. The next prime is 7856908121. The reversal of 7856908061 is 1608096587.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5357508025 + 2499400036 = 73195^2 + 49994^2 .

It is a cyclic number.

It is not a de Polignac number, because 7856908061 - 2¹⁴ = 7856891677 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7856908001) by changing a digit.

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 as a sum of consecutive naturals, namely, 3928454030 + 3928454031.

It is an arithmetic number, because the mean of its divisors is an integer number (3928454031).

Almost surely, 2^7856908061 is an apocalyptic number.

It is an amenable number.

7856908061 is a deficient number, since it is larger than the sum of its proper divisors (1).

7856908061 is an equidigital number, since it uses as much as digits as its factorization.

7856908061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 50.

The square root of 7856908061 is about 88639.2016040307. The cubic root of 7856908061 is about 1988.0038619469.

The spelling of 7856908061 in words is "seven billion, eight hundred fifty-six million, nine hundred eight thousand, sixty-one".